Raspberry Lemon Coffee Cake with Soft, Tender Crumb

Bright lemon perfume, tart raspberry pockets, and a golden blanket of buttery crumbs give this raspberry lemon coffee cake plenty of contrast. Sour cream keeps the interior soft and tender, while the berries interrupt the fine crumb with juicy bursts. The streusel stays distinct from the cake instead of melting into it, and a thin lemon glaze adds a final sharp-sweet note without turning the surface soggy.

I build the batter by creaming softened butter with sugar, then adding the eggs gradually so the mixture stays emulsified. Alternating the dry ingredients with sour cream limits gluten development and makes the thick batter sturdy enough to suspend the raspberries. Watch the physical cues rather than relying only on the clock: the center should spring back, the streusel should be golden, and a tester should show moist crumbs but no wet batter.

Why This Raspberry Cake Is Ridiculously Delicious

• Sour cream supplies both fat and water, producing a soft, moist crumb without making the batter loose enough for the raspberries to sink immediately.
• Creaming softened butter with granulated sugar traps small air pockets that expand in the oven and give this relatively rich coffee cake a lighter structure.
• Lemon zest is rubbed into the sugar before mixing, releasing aromatic citrus oils and distributing them evenly through the batter.
• The thick flour, brown sugar, and butter streusel forms defined crumbs that bake into a crisp, golden contrast to the tender cake.
• A moderate amount of raspberry delivers tart fruit throughout the cake while leaving enough uninterrupted batter to set cleanly around each berry.

Ingredient Notes for Raspberry Lemon Coffee Cake with Soft, Tender Crumb

• Raspberries: Fresh raspberries give the cleanest pockets of fruit. Frozen raspberries also work when added directly from the freezer; thawing releases juice that can streak and loosen the batter.
• Lemon: Finely grate only the yellow zest because the white pith is bitter. Rubbing zest into granulated sugar helps release its fragrant oils, while fresh juice provides acidity in both the batter and glaze.
• Sour cream: Full-fat sour cream contributes moisture, fat, and acidity. Its thickness supports the berries and promotes a tender crumb without thinning the batter like milk would.
• Butter: Use unsalted butter so the salt level remains controlled. The streusel butter should be melted and cooled slightly, while the cake butter must be pliable but not greasy for effective creaming.
• All-purpose flour: Flour supplies the starch and protein needed to hold the fruit and streusel. Weigh it when possible, and stop mixing as soon as the last dry streaks disappear to avoid a tough crumb.
• Leaveners: Baking powder provides dependable lift, while baking soda reacts with the acidic sour cream and lemon juice. Both are needed for an evenly risen cake with balanced browning.
• Confectioners’ sugar: Its fine texture dissolves quickly into the lemon glaze. Add the juice gradually because a small change in liquid produces a large change in glaze consistency.

My Best Baking Tips

• Use a light-colored metal pan for predictable browning. Glass holds heat longer and a dark pan can brown the edges before the fruit-heavy center is fully baked.
• Keep the raspberry quantity measured rather than adding an extra handful. Excess fruit contributes enough juice to create gummy channels and weakens the cake structure.
• If using frozen raspberries, leave them frozen until the moment they are folded in. Work quickly and expect the cake to need the upper end of the baking range.
• Do not press the streusel flat. Loose crumbs expose more surface area to the oven’s heat, giving the topping crisp edges while larger clusters remain buttery inside.
• Test the cake in two or three places that are not visibly occupied by berries. A skewer passing through raspberry juice can look wet even when the surrounding batter is safely baked.

Ingredients for Raspberry Lemon Coffee Cake

• 90 g all-purpose flour (For the streusel; 3/4 cup, spooned and leveled.)
• 70 g light brown sugar (For the streusel; 1/3 cup, packed.)
• 1/4 teaspoon fine sea salt (For the streusel.)
• 57 g unsalted butter (For the streusel; 1/4 cup, melted and cooled for 5 minutes.)
• 250 g all-purpose flour (For the cake; 2 cups plus 1 tablespoon, spooned and leveled.)
• 2 teaspoons baking powder (Level the measuring spoon.)
• 1/2 teaspoon baking soda (Provides lift in combination with the acidic sour cream and lemon.)
• 1/2 teaspoon fine sea salt (For the cake batter.)
• 180 g granulated sugar (About 3/4 cup plus 2 tablespoons.)
• 2 tablespoons finely grated lemon zest (From about 2 medium lemons; grate only the yellow surface.)
• 113 g unsalted butter (1/2 cup, softened to about 65°F or 18°C.)
• 2 large eggs (At room temperature.)
• 1 teaspoon pure vanilla extract (Adds roundness to the lemon and raspberry flavors.)
• 180 g full-fat sour cream (3/4 cup, at room temperature.)
• 30 ml fresh lemon juice (2 tablespoons, for the cake batter.)
• 170 g raspberries (About 1 1/2 cups; use fresh or frozen. Do not thaw frozen berries.)
• 90 g confectioners’ sugar (About 3/4 cup, sifted, for the glaze.)
• 15 to 20 ml fresh lemon juice (1 to 1 1/3 tablespoons, added gradually to the glaze.)

How to Make Raspberry Lemon Coffee Cake

• STEP 1). Prepare the oven and pan Position a rack in the center of the oven and heat it to 350°F or 175°C. Lightly grease a 9-inch square light-colored metal pan, then line it with parchment, leaving an overhang on two sides for lifting. Grease the exposed ends as well. Set the eggs and sour cream nearby so they lose their chill while you measure. A room-temperature emulsion traps air more effectively and is less likely to look curdled.
• STEP 2). Make and chill the streusel In a medium bowl, whisk the 90 grams flour, brown sugar, and 1/4 teaspoon salt until no compact sugar lumps remain. Pour in the melted, slightly cooled butter and stir with a fork until all the flour is moistened. Squeeze portions together, then break them into a mixture of pea-sized and hazelnut-sized crumbs. Refrigerate the streusel while making the batter so the butter firms and the pieces retain their shape during baking.
• STEP 3). Combine the dry and wet mixtures Whisk the 250 grams flour, baking powder, baking soda, and 1/2 teaspoon salt in a medium bowl for about 30 seconds. In a separate small bowl, stir the sour cream with the 30 milliliters lemon juice until smooth. Keep both mixtures beside the mixer. Combining the acidic ingredients separately allows them to enter the batter evenly, while thoroughly distributing the leaveners prevents isolated bitter spots or an uneven rise.
• STEP 4). Cream the butter and build the batter Place the granulated sugar and lemon zest in a large bowl and rub them together with your fingertips until the sugar feels damp and smells strongly of lemon. Add the softened butter and beat at medium speed for 3 to 4 minutes, scraping once, until pale and fluffy. Beat in the eggs one at a time for 30 seconds each, then add the vanilla. The mixture should look creamy and aerated; slight curdling is acceptable and will smooth out with flour.
• STEP 5). Finish the batter and add the raspberries With the mixer on low, add one-third of the flour mixture, followed by half of the sour cream mixture. Repeat, then mix in the remaining flour only until a few pale streaks remain. Scrape the bowl with a flexible spatula, reaching the bottom, and fold just until uniform. Gently fold in two-thirds of the raspberries with two or three broad turns. The finished batter will be thick and spoonable, which helps keep the fruit suspended.
• STEP 6). Assemble and bake the coffee cake Spread the batter evenly in the prepared pan, nudging it into the corners without compressing it. Scatter the reserved raspberries over the surface, then cover evenly with the cold streusel, keeping some larger clusters intact. Bake for 47 to 55 minutes, rotating the pan after 35 minutes. The cake is done when the center springs back, the crumbs are golden, and a tester inserted away from a berry comes out with moist crumbs but no liquid batter.
• STEP 7). Cool, glaze, and slice Set the pan on a wire rack and cool for 30 minutes. Use the parchment overhang to lift the cake carefully from the pan, then cool it directly on the rack for at least 75 minutes more. Whisk the sifted confectioners’ sugar with 15 milliliters lemon juice, adding the remainder drop by drop until the glaze falls in a thick ribbon. Drizzle it over the fully cooled cake, let it set for 15 minutes, then cut into 12 slices with a sharp knife.

Storage and Freezing

• Storage: Keep the cooled, glazed coffee cake in an airtight container at room temperature for up to 2 days. For longer storage, refrigerate it for up to 5 days to limit spoilage from the moist fruit.
• Freezing: Freeze individual unglazed or fully set glazed slices in a single layer until firm, then wrap each slice and place it in a freezer-safe container for up to 2 months.
• Thawing: Unwrap frozen slices and thaw them in a covered container at room temperature for 1 to 2 hours. Keeping them covered prevents the crumb from drying as it thaws.
• Serving: Let refrigerated slices stand at room temperature for about 30 minutes before serving. The butter-softened crumb and lemon aroma are more pronounced when the cake is not refrigerator-cold.

Frequently Asked Questions

More Ridiculously Delicious Cakes

• Cinnamon Streusel Coffee Cake with a Soft Sour Cream Crumb
• Lemon Layer Cake with Soft, Bright Citrus Layers
• Coconut Layer Cake with Soft, Tender Crumb
• Chocolate Peanut Butter Sheet Cake with Soft, Tender Crumb
• Strawberry Layer Cake with Soft Berry-Flavored Layers
• Cranberry Orange Coffee Cake with Soft, Tender Crumb
• Strawberry Rhubarb Coffee Cake with Soft, Tender Crumb
• Lemon Poppy Seed Coffee Cake with Soft, Tender Crumb

Raspberry Lemon Coffee Cake with Soft, Tender Crumb

A from-scratch raspberry lemon coffee cake with a soft sour cream crumb, fresh lemon zest, juicy raspberries, buttery streusel, and a thin lemon glaze. Baked in a 9-inch square pan, it yields 12 shareable slices.

Print Recipe Pin Recipe

Prep Time 30 minutes mins

Cook Time 55 minutes mins

Cooling 2 hours hrs

Total Time 3 hours hrs 25 minutes mins

Servings: 12 slices

Course: Dessert

Cuisine: American

Calories: 368

Ingredients Equipment Method Notes

Ingredients

  

• 90 g all-purpose flour For the streusel; 3/4 cup, spooned and leveled.
• 70 g light brown sugar For the streusel; 1/3 cup, packed.
• 1/4 teaspoon fine sea salt For the streusel.
• 57 g unsalted butter For the streusel; 1/4 cup, melted and cooled for 5 minutes.
• 250 g all-purpose flour For the cake; 2 cups plus 1 tablespoon, spooned and leveled.
• 2 teaspoons baking powder Level the measuring spoon.
• 1/2 teaspoon baking soda Provides lift in combination with the acidic sour cream and lemon.
• 1/2 teaspoon fine sea salt For the cake batter.
• 180 g granulated sugar About 3/4 cup plus 2 tablespoons.
• 2 tablespoons finely grated lemon zest From about 2 medium lemons; grate only the yellow surface.
• 113 g unsalted butter 1/2 cup, softened to about 65°F or 18°C.
• 2 large eggs At room temperature.
• 1 teaspoon pure vanilla extract Adds roundness to the lemon and raspberry flavors.
• 180 g full-fat sour cream 3/4 cup, at room temperature.
• 30 ml fresh lemon juice 2 tablespoons, for the cake batter.
• 170 g raspberries About 1 1/2 cups; use fresh or frozen. Do not thaw frozen berries.
• 90 g confectioners’ sugar About 3/4 cup, sifted, for the glaze.
• 15 to 20 ml fresh lemon juice 1 to 1 1/3 tablespoons, added gradually to the glaze.

Equipment

• 9-inch square light-colored metal baking pan
• Parchment paper
• Digital kitchen scale or dry and liquid measuring cups
• Two medium mixing bowls
• Large mixing bowl
• Electric hand mixer or stand mixer fitted with the paddle attachment
• Fine-mesh sieve or whisk
• Fine citrus grater
• Flexible silicone spatula
• Small bowl (for glaze)
• Wire cooling rack
• Wooden pick or thin cake tester

Method

 

1. Position a rack in the center of the oven and heat it to 350°F or 175°C. Lightly grease a 9-inch square light-colored metal pan, then line it with parchment, leaving an overhang on two sides for lifting. Grease the exposed ends as well. Set the eggs and sour cream nearby so they lose their chill while you measure. A room-temperature emulsion traps air more effectively and is less likely to look curdled.
2. In a medium bowl, whisk the 90 grams flour, brown sugar, and 1/4 teaspoon salt until no compact sugar lumps remain. Pour in the melted, slightly cooled butter and stir with a fork until all the flour is moistened. Squeeze portions together, then break them into a mixture of pea-sized and hazelnut-sized crumbs. Refrigerate the streusel while making the batter so the butter firms and the pieces retain their shape during baking.
3. Whisk the 250 grams flour, baking powder, baking soda, and 1/2 teaspoon salt in a medium bowl for about 30 seconds. In a separate small bowl, stir the sour cream with the 30 milliliters lemon juice until smooth. Keep both mixtures beside the mixer. Combining the acidic ingredients separately allows them to enter the batter evenly, while thoroughly distributing the leaveners prevents isolated bitter spots or an uneven rise.
4. Place the granulated sugar and lemon zest in a large bowl and rub them together with your fingertips until the sugar feels damp and smells strongly of lemon. Add the softened butter and beat at medium speed for 3 to 4 minutes, scraping once, until pale and fluffy. Beat in the eggs one at a time for 30 seconds each, then add the vanilla. The mixture should look creamy and aerated; slight curdling is acceptable and will smooth out with flour.
5. With the mixer on low, add one-third of the flour mixture, followed by half of the sour cream mixture. Repeat, then mix in the remaining flour only until a few pale streaks remain. Scrape the bowl with a flexible spatula, reaching the bottom, and fold just until uniform. Gently fold in two-thirds of the raspberries with two or three broad turns. The finished batter will be thick and spoonable, which helps keep the fruit suspended.
6. Spread the batter evenly in the prepared pan, nudging it into the corners without compressing it. Scatter the reserved raspberries over the surface, then cover evenly with the cold streusel, keeping some larger clusters intact. Bake for 47 to 55 minutes, rotating the pan after 35 minutes. The cake is done when the center springs back, the crumbs are golden, and a tester inserted away from a berry comes out with moist crumbs but no liquid batter.
7. Set the pan on a wire rack and cool for 30 minutes. Use the parchment overhang to lift the cake carefully from the pan, then cool it directly on the rack for at least 75 minutes more. Whisk the sifted confectioners’ sugar with 15 milliliters lemon juice, adding the remainder drop by drop until the glaze falls in a thick ribbon. Drizzle it over the fully cooled cake, let it set for 15 minutes, then cut into 12 slices with a sharp knife.

Notes

• Use a light-colored metal pan for predictable browning. Glass holds heat longer and a dark pan can brown the edges before the fruit-heavy center is fully baked.
• Keep the raspberry quantity measured rather than adding an extra handful. Excess fruit contributes enough juice to create gummy channels and weakens the cake structure.
• If using frozen raspberries, leave them frozen until the moment they are folded in. Work quickly and expect the cake to need the upper end of the baking range.
• Do not press the streusel flat. Loose crumbs expose more surface area to the oven’s heat, giving the topping crisp edges while larger clusters remain buttery inside.
• Test the cake in two or three places that are not visibly occupied by berries. A skewer passing through raspberry juice can look wet even when the surrounding batter is safely baked.