Blueberry Lemon Tart with a Pastry Crust

A golden pastry shell, silky violet filling, and bright lemon aroma give this blueberry lemon tart a sharp, juicy character without sacrificing clean slices. The buttery crust is crisp beneath the custard, while softly whipped cream rounds out the lemon’s acidity and fresh blueberries add a cool burst of fruit on top.

I fully blind-bake the shell and seal it with egg white before adding the filling, which limits moisture migration from the custard. I also reduce the blueberry puree to a measured weight instead of relying on cooking time alone. The tart is ready when the edges are set and the center still moves as one gentle wobble, then it needs a complete chill before slicing.

Why This Blueberry Tart Is Ridiculously Delicious

• Fully blind-baking the pastry shell develops color and removes raw flour moisture before the wet blueberry lemon filling is added.
• A thin coating of baked egg white seals small cracks and creates an extra barrier between the pastry and custard.
• Reducing and weighing the blueberry puree concentrates its flavor while controlling the amount of water entering the filling.
• Egg proteins provide the primary set, while sweetened condensed milk and lemon juice create a thick, smooth custard that slices cleanly after chilling.
• A low 325°F filling bake sets the edges without aggressively curdling the eggs or producing a cracked, rubbery center.

Ingredient Notes for Blueberry Lemon Tart with a Pastry Crust

• All-purpose flour: Moderate protein gives the shell enough structure to release from the pan while remaining tender. Weigh it when possible and avoid compacting it into a measuring cup.
• Unsalted butter: Cold butter limits gluten development and gives the pastry a short, crisp bite. Cube it before mixing so it disperses evenly without becoming greasy.
• Eggs: The separated egg contributes yolk to the dough and white to the moisture barrier. Additional yolks enrich the filling, while one whole egg supplies enough protein for a stable set.
• Blueberries: Fresh or frozen berries work in the cooked puree because excess water is reduced before weighing. Use fresh, dry berries for the garnish so the whipped cream stays neat.
• Fresh lemon: Juice supplies acidity and a clean citrus flavor, while finely grated zest contributes aromatic oils. Zest only the yellow surface because the white pith tastes bitter.
• Sweetened condensed milk: This provides dairy solids, sugar, and body in one ingredient. Use sweetened condensed milk, not evaporated milk, because they behave very differently in the custard.
• Heavy whipping cream: Cream with at least 35 percent milk fat whips into a stable topping. Keep the cream and mixing bowl cold, and stop at medium peaks rather than taking it to a grainy texture.

A Few Baking Tips

• Keep the pastry cold from mixing through baking. If it becomes soft or shiny while rolling, refrigerate it on a flat tray for 10 minutes before continuing.
• Push the dough into the tart pan’s corners with a small piece of excess dough rather than your fingertips. This creates an even base without warming or puncturing it.
• Weigh the finished blueberry puree after straining. Cooking only by time can leave too much water because berry size, ripeness, and frozen fruit all change the reduction rate.
• Mix the custard gently and pop surface bubbles before baking. Large trapped bubbles can rise, burst, and leave craters in the otherwise smooth filling.
• Wait through the full four-hour chill before removing and slicing the tart. The center may look set sooner, but warm custard has not developed enough structure for clean wedges.

Ingredients for Blueberry Lemon Tart

• 1 1/2 cups (180 g) all-purpose flour (Spoon and level if measuring by volume.)
• 1/2 cup (60 g) confectioners’ sugar (Sift if noticeably lumpy.)
• 1/4 teaspoon fine salt (Balances the sweet pastry and filling.)
• 1/2 cup (113 g) unsalted butter (Cold and cut into 1/2-inch cubes.)
• 1 large egg (Separated; use the yolk in the dough and the white to seal the shell.)
• 1 teaspoon pure vanilla extract (For the pastry dough.)
• 2 tablespoons (30 ml) ice water (Add gradually and use only as much as needed.)
• 2 cups (300 g) blueberries (Fresh or frozen; do not thaw frozen berries.)
• 1/4 cup (50 g) granulated sugar (For concentrating the blueberry puree.)
• 1/3 cup (80 ml) fresh lemon juice (Divided between the blueberry puree and custard.)
• 1 tablespoon finely grated lemon zest (Grate only the yellow outer peel.)
• 1 can (396 g) sweetened condensed milk (Do not substitute evaporated milk.)
• 4 large egg yolks (Bring to cool room temperature before mixing.)
• 1 large egg (Bring to cool room temperature before mixing.)
• 3/4 cup (180 ml) heavy whipping cream (Keep refrigerated until whipping.)
• 2 tablespoons (15 g) confectioners’ sugar (For sweetening the whipped cream.)
• 1/2 cup (75 g) fresh blueberries (Washed and dried thoroughly for garnish.)
• 1 teaspoon finely grated lemon zest (For garnish; grate shortly before serving.)

How to Make Blueberry Lemon Tart

• STEP 1). Mix the pastry dough Combine the flour, confectioners’ sugar, and salt in a food processor, then pulse briefly to distribute them. Add the cold butter and pulse until the mixture resembles coarse crumbs with a few pea-sized pieces. Add the reserved egg yolk, vanilla, and 1 tablespoon ice water. Pulse until damp clumps form and hold when squeezed. Add the remaining water 1 teaspoon at a time only if the dough remains powdery; overhydrated pastry becomes tough.
• STEP 2). Chill, roll, and line the tart pan Turn the dough onto the counter, press it together without kneading, and shape it into a 1-inch-thick disk. Wrap and refrigerate for 1 hour. Roll the chilled dough on a lightly floured surface into an 11-inch circle about 1/8 inch thick. Transfer it to a 9-inch removable-bottom tart pan, press it into the corners without stretching, and trim the edge. Prick the base lightly with a fork, then freeze the lined pan for 20 minutes while heating the oven to 375°F.
• STEP 3). Blind-bake and seal the pastry shell Set the chilled tart pan on a rimmed baking sheet. Line the pastry with crumpled parchment and fill it to the top with pie weights, which supports the sides as the butter melts. Bake for 18 minutes, remove the parchment and weights carefully, and bake for another 8 to 10 minutes until the base looks dry and the edges are golden. Brush the hot interior lightly with the reserved egg white, then bake for 2 minutes. Cool for 15 minutes.
• STEP 4). Concentrate the blueberry puree Combine the blueberries, granulated sugar, and 1 tablespoon of the measured lemon juice in a small saucepan. Cook over medium heat for 10 to 15 minutes, stirring and crushing the berries, until juicy and noticeably thickened. Blend carefully until smooth, press through a fine-mesh sieve, and discard the skins. Return the puree to the saucepan and simmer until it weighs 150 g. Transfer it to a bowl and cool until lukewarm so it does not prematurely cook the eggs.
• STEP 5). Mix and bake the blueberry lemon filling Reduce the oven to 325°F. Whisk the sweetened condensed milk, four egg yolks, whole egg, remaining lemon juice, and lemon zest in a large bowl until smooth, taking care not to beat in excessive air. Whisk in the 150 g blueberry puree until the color is even. Pour the filling into the cooled shell and pop visible surface bubbles with a toothpick. Bake on the sheet pan for 22 to 27 minutes, until the edges are set and the center gives one cohesive, gentle wobble. It should reach about 165°F if checked with an instant-read thermometer.
• STEP 6). Cool and chill the tart completely Transfer the tart, still in its pan, to a wire rack and cool for 1 hour without disturbing the soft center. Refrigerate it uncovered until no longer warm, then cover without touching the surface and chill for at least 4 hours. This cooling period finishes the custard’s set and allows the pastry fats to firm, so cutting early will produce loose filling and ragged slices.
• STEP 7). Whip, garnish, and slice Beat the cold heavy cream and confectioners’ sugar in a chilled bowl at medium speed until medium peaks hold their shape but the cream still looks smooth. Remove the cold tart from the outer ring and slide it carefully onto a serving plate. Spoon or pipe the cream around the edge, then add the dry fresh blueberries and lemon zest. Cut with a sharp knife warmed under hot water and wiped dry between slices, serving the tart chilled or after 10 minutes at room temperature.

Storage and Freezing

• Refrigerator: Store the decorated tart covered in the refrigerator for up to 3 days. Keep the cover from touching the whipped cream.
• Freezing: Freeze the fully chilled tart without whipped cream, fresh berries, or zest. Wrap the tart securely and freeze for up to 1 month.
• Thawing: Unwrap and thaw overnight in the refrigerator, then garnish shortly before serving. A small amount of surface moisture can be blotted gently with a paper towel.
• Serving: For a firmer custard and crispest crust, serve directly from the refrigerator or let the tart stand at room temperature for no more than 10 to 15 minutes before slicing.

Frequently Asked Questions

More Ridiculously Delicious Pies & Tarts

• Lemon Chess Pie with Golden Pastry
• Lemon Cream Pie with Golden Pastry
• Blueberry Lattice Pie with a Juicy, Sliceable Filling
• Dark Chocolate Tart with a Pastry Crust
• Raspberry Frangipane Tart with a Crisp Pastry Base

Blueberry Lemon Tart with a Pastry Crust

A crisp, fully blind-baked pastry shell holds a silky blueberry lemon custard made with concentrated berry puree, fresh lemon, eggs, and sweetened condensed milk. Finish the chilled tart with softly whipped cream, fresh blueberries, and lemon zest.

Print Recipe Pin Recipe

Prep Time 45 minutes mins

Cook Time 1 hour hr 15 minutes mins

Cooling 6 hours hrs 15 minutes mins

Total Time 8 hours hrs 15 minutes mins

Servings: 10 slices

Course: Dessert

Cuisine: French

Calories: 443

Ingredients Equipment Method Notes

Ingredients

  

• 1 1/2 cups (180 g) all-purpose flour Spoon and level if measuring by volume.
• 1/2 cup (60 g) confectioners’ sugar Sift if noticeably lumpy.
• 1/4 teaspoon fine salt Balances the sweet pastry and filling.
• 1/2 cup (113 g) unsalted butter Cold and cut into 1/2-inch cubes.
• 1 large egg Separated; use the yolk in the dough and the white to seal the shell.
• 1 teaspoon pure vanilla extract For the pastry dough.
• 2 tablespoons (30 ml) ice water Add gradually and use only as much as needed.
• 2 cups (300 g) blueberries Fresh or frozen; do not thaw frozen berries.
• 1/4 cup (50 g) granulated sugar For concentrating the blueberry puree.
• 1/3 cup (80 ml) fresh lemon juice Divided between the blueberry puree and custard.
• 1 tablespoon finely grated lemon zest Grate only the yellow outer peel.
• 1 can (396 g) sweetened condensed milk Do not substitute evaporated milk.
• 4 large egg yolks Bring to cool room temperature before mixing.
• 1 large egg Bring to cool room temperature before mixing.
• 3/4 cup (180 ml) heavy whipping cream Keep refrigerated until whipping.
• 2 tablespoons (15 g) confectioners’ sugar For sweetening the whipped cream.
• 1/2 cup (75 g) fresh blueberries Washed and dried thoroughly for garnish.
• 1 teaspoon finely grated lemon zest For garnish; grate shortly before serving.

Equipment

• 9-inch round tart pan with a removable bottom, approximately 1 inch deep
• Food processor fitted with the metal blade
• Digital kitchen scale
• Rolling pin
• Parchment paper
• Pie weights or dry beans reserved for blind-baking
• Rimmed baking sheet
• Small saucepan
• Fine-mesh sieve
• Blender or immersion blender
• Medium and large mixing bowls
• Whisk and silicone spatula
• Instant-read thermometer, optional
• Electric hand mixer or stand mixer with whisk attachment
• Sharp chef’s knife

Method

 

1. Combine the flour, confectioners’ sugar, and salt in a food processor, then pulse briefly to distribute them. Add the cold butter and pulse until the mixture resembles coarse crumbs with a few pea-sized pieces. Add the reserved egg yolk, vanilla, and 1 tablespoon ice water. Pulse until damp clumps form and hold when squeezed. Add the remaining water 1 teaspoon at a time only if the dough remains powdery; overhydrated pastry becomes tough.
2. Turn the dough onto the counter, press it together without kneading, and shape it into a 1-inch-thick disk. Wrap and refrigerate for 1 hour. Roll the chilled dough on a lightly floured surface into an 11-inch circle about 1/8 inch thick. Transfer it to a 9-inch removable-bottom tart pan, press it into the corners without stretching, and trim the edge. Prick the base lightly with a fork, then freeze the lined pan for 20 minutes while heating the oven to 375°F.
3. Set the chilled tart pan on a rimmed baking sheet. Line the pastry with crumpled parchment and fill it to the top with pie weights, which supports the sides as the butter melts. Bake for 18 minutes, remove the parchment and weights carefully, and bake for another 8 to 10 minutes until the base looks dry and the edges are golden. Brush the hot interior lightly with the reserved egg white, then bake for 2 minutes. Cool for 15 minutes.
4. Combine the blueberries, granulated sugar, and 1 tablespoon of the measured lemon juice in a small saucepan. Cook over medium heat for 10 to 15 minutes, stirring and crushing the berries, until juicy and noticeably thickened. Blend carefully until smooth, press through a fine-mesh sieve, and discard the skins. Return the puree to the saucepan and simmer until it weighs 150 g. Transfer it to a bowl and cool until lukewarm so it does not prematurely cook the eggs.
5. Reduce the oven to 325°F. Whisk the sweetened condensed milk, four egg yolks, whole egg, remaining lemon juice, and lemon zest in a large bowl until smooth, taking care not to beat in excessive air. Whisk in the 150 g blueberry puree until the color is even. Pour the filling into the cooled shell and pop visible surface bubbles with a toothpick. Bake on the sheet pan for 22 to 27 minutes, until the edges are set and the center gives one cohesive, gentle wobble. It should reach about 165°F if checked with an instant-read thermometer.
6. Transfer the tart, still in its pan, to a wire rack and cool for 1 hour without disturbing the soft center. Refrigerate it uncovered until no longer warm, then cover without touching the surface and chill for at least 4 hours. This cooling period finishes the custard’s set and allows the pastry fats to firm, so cutting early will produce loose filling and ragged slices.
7. Beat the cold heavy cream and confectioners’ sugar in a chilled bowl at medium speed until medium peaks hold their shape but the cream still looks smooth. Remove the cold tart from the outer ring and slide it carefully onto a serving plate. Spoon or pipe the cream around the edge, then add the dry fresh blueberries and lemon zest. Cut with a sharp knife warmed under hot water and wiped dry between slices, serving the tart chilled or after 10 minutes at room temperature.

Notes

• Keep the pastry cold from mixing through baking. If it becomes soft or shiny while rolling, refrigerate it on a flat tray for 10 minutes before continuing.
• Push the dough into the tart pan’s corners with a small piece of excess dough rather than your fingertips. This creates an even base without warming or puncturing it.
• Weigh the finished blueberry puree after straining. Cooking only by time can leave too much water because berry size, ripeness, and frozen fruit all change the reduction rate.
• Mix the custard gently and pop surface bubbles before baking. Large trapped bubbles can rise, burst, and leave craters in the otherwise smooth filling.
• Wait through the full four-hour chill before removing and slicing the tart. The center may look set sooner, but warm custard has not developed enough structure for clean wedges.