Pistachio Sandwich Cookies with Creamy Pistachio Filling

Toasty pistachio aroma, delicately crisp edges, and a creamy nut-filled center give these pistachio sandwich cookies plenty of flavor without making them overly sweet. The pale green-speckled cutouts are substantial enough to hold the filling, but tender enough to break cleanly with each bite. A small pinch of salt sharpens the roasted nut flavor and keeps the confectioners’ sugar from taking over.

I grind the pistachios with part of the flour so their natural oil is absorbed before it can turn the nuts into paste. The dough is rolled 5 mm thick, cut into 6 cm rounds, and chilled again to control spreading. Look for matte surfaces, set edges, and only the faintest color underneath when baking. The filling should hold soft ridges from the mixer and compress neatly to the cookie edges without running.

Why These Pistachio Cookies Frickin’ Work

• Grinding the pistachios with flour limits clumping and distributes their fat and flavor evenly throughout the dough.
• Confectioners’ sugar dissolves readily and contains a little starch, producing a fine, tender texture instead of a coarse or chewy crumb.
• Cornstarch lowers the dough’s effective gluten strength, helping the cookies remain delicate while still supporting the pistachio filling.
• Rolling the dough to an even 5 mm and chilling the cutouts before baking controls spread, creates matching pieces, and prevents fragile, overly thin cookies.
• Unsweetened pistachio butter adds concentrated nut flavor to the filling without introducing the extra sugar or variable consistency of sweetened pistachio spread.

Ingredient Notes for Pistachio Sandwich Cookies with Creamy Pistachio Filling

• Roasted unsalted pistachios: Roasted nuts provide a deeper pistachio flavor than raw nuts. They must be completely cool before grinding because warm nuts release oil quickly and can form a paste.
• All-purpose flour: Flour supplies the structure needed for clean cutouts. Measure by weight and avoid adding extra flour during mixing, which would make the cookies dry and prone to cracking.
• Cornstarch: This fine starch reduces gluten development and gives the cookies a tender, short finish. It also helps the dough retain sharp edges during baking.
• Unsalted butter: Butter carries the pistachio flavor in both components. Use softened butter for the dough, but keep the filling butter slightly cooler so the finished cream does not become loose or greasy.
• Confectioners’ sugar: The finely milled sugar creates a smooth dough and filling. Sifting the filling portion prevents dry sugar pockets without requiring excessive mixing.
• Egg yolk: One yolk supplies fat, protein, and enough moisture to bind the dough without encouraging excessive spread. Use a large yolk weighing approximately 18 grams.
• Pure pistachio butter: Use a smooth, unsweetened product made primarily from pistachios. Stir it thoroughly before weighing so separated oil is reincorporated and the filling remains consistent.
• Heavy cream: A small amount adjusts the buttercream from stiff to pipeable. Add it gradually because pistachio butter consistency varies and too much liquid can make the sandwiches slide.

Expert Baking Tips

• Keep the dough cool rather than rock-hard. Dough near 16 to 18°C rolls smoothly and cuts cleanly; warmer dough sticks and spreads, while colder dough cracks around the edges.
• Use rolling guides to maintain a true 5 mm thickness. Uneven cookies bake at different rates and create lopsided sandwiches even when the rounds have the same diameter.
• Bake on light-colored aluminum sheets. Dark pans transfer heat more aggressively and can brown the cookie bottoms before the centers have set.
• Pair the cookies before piping. Matching slight differences in diameter and thickness first produces level sandwiches and prevents a last-minute hunt for suitable tops.
• If the filling looks shiny, slack, or greasy, chill it for 10 minutes and remix briefly. Adding more confectioners’ sugar immediately can make the center unnecessarily sweet and chalky.

Ingredients for Pistachio Sandwich Cookies

• 120 g roasted unsalted pistachios (completely cooled)
• 250 g all-purpose flour (divided as directed)
• 30 g cornstarch
• 1/2 tsp fine sea salt
• 170 g unsalted butter (softened to 18 to 20°C)
• 110 g confectioners’ sugar (sifted)
• 1 large egg yolk (about 18 g, at room temperature)
• 1 tsp pure vanilla extract
• 57 g unsalted butter (softened to about 18°C, for the filling)
• 70 g smooth unsweetened pistachio butter (stirred well before weighing)
• 110 g confectioners’ sugar (sifted, for the filling)
• 1/8 tsp fine sea salt (for the filling)
• 10 g heavy cream (plus up to 5 g only if needed)

How to Make Pistachio Sandwich Cookies

• STEP 1). Grind the pistachios and combine the dry ingredients Place the cooled pistachios and 50 g of the all-purpose flour in a food processor. Pulse in short bursts for 20 to 30 seconds, scraping once, until the nuts resemble fine meal with no pieces larger than coarse sand. Do not run the processor continuously or the pistachios may release oil and become pasty. Add the remaining flour, cornstarch, and salt, then pulse three or four times to distribute everything evenly.
• STEP 2). Mix the pistachio cookie dough Using a stand mixer fitted with the paddle, beat the softened butter and confectioners’ sugar on medium-low speed for about 90 seconds, until smooth and slightly lightened but not fluffy. Scrape the bowl and paddle. Mix in the egg yolk and vanilla on low until no yellow streaks remain. Add the pistachio mixture and mix on low just until moist clumps form. Finish folding with a spatula; the dough should hold together when pressed without feeling sticky or oily.
• STEP 3). Shape and chill the dough Turn the dough onto a clean work surface and press it together gently without kneading. Divide it into two equal portions, flatten each into a 2 cm-thick disk, and wrap tightly. Refrigerate for 45 minutes, until the dough feels cool and firm but still yields slightly when pressed. If chilled until rigid, let it stand at room temperature for 5 to 10 minutes before rolling so the edges do not split.
• STEP 4). Roll, cut, and chill the cookies Line two light-colored baking sheets with parchment. Working with one disk at a time, roll the dough between two sheets of parchment to an even 5 mm thickness, keeping it cool and pliable at roughly 16 to 18°C. Cut 6 cm rounds and transfer them with a thin spatula, leaving 3 cm between pieces. Reroll scraps once without adding flour. Make 36 rounds, arranging 18 per sheet, then freeze both sheets for 15 minutes while the oven heats to 165°C.
• STEP 5). Bake until set and lightly colored Set an oven rack in the center and bake one chilled sheet at a time at 165°C for 13 to 15 minutes. Rotate the sheet after 8 minutes for even baking. The cookies are ready when their surfaces look dry and matte, the edges feel set, and the undersides show only faint golden color. Leave them on the hot sheet for 5 minutes, then transfer carefully to a wire rack. Cool completely for about 25 minutes before filling; warm cookies will melt the buttercream.
• STEP 6). Prepare the creamy pistachio filling Beat the 57 g softened butter in a clean mixer bowl with the paddle on medium speed for 1 minute, until smooth. Add the stirred pistachio butter and beat for 30 seconds, scraping the bowl. Add the sifted confectioners’ sugar and salt, then mix on low until incorporated. Add 10 g heavy cream and beat on medium for 60 to 90 seconds. The filling should look creamy and hold soft ridges; add up to 5 g more cream only if it remains too stiff to pipe.
• STEP 7). Match and fill the cookie pairs Turn half of the cooled cookies flat-side up and match them with similarly sized tops. Transfer the filling to a piping bag fitted with a 12 mm plain tip. Pipe approximately 14 g of filling onto each bottom cookie, beginning in the center and leaving a 5 mm border. Place the matching cookie on top and press straight down with light, even pressure until the filling reaches the edge. Twisting can crack the cookies or push the filling unevenly.
• STEP 8). Set the sandwiches before serving Arrange the assembled cookies in a single layer and let them stand in a cool room for 30 minutes so the filling can settle and grip both cookies. For cleaner handling in a warm kitchen, refrigerate them for 15 minutes instead, then return them to room temperature before serving. The finished pistachio sandwich cookies should have crisp, tender shells and a smooth center that compresses slightly without squeezing out.

Storage and Freezing

• Storage: Keep filled pistachio sandwich cookies in a single layer in an airtight container at cool room temperature for up to 2 days, or refrigerate for up to 5 days. Separate stacked layers with parchment.
• Freezing unfilled cookies: Freeze fully cooled cookie rounds in an airtight container with parchment between layers for up to 2 months. This gives the cleanest texture and protects the filling from condensation.
• Freezing filled cookies: Freeze assembled cookies in a single layer until firm, then transfer them to an airtight container for up to 1 month.
• Thawing: Thaw frozen cookies inside the closed container in the refrigerator overnight. Keeping the container closed prevents condensation from settling directly on the cookies.
• Serving: Let refrigerated cookies stand at room temperature for 20 to 30 minutes so the pistachio filling becomes creamy and the nut flavor is more pronounced.

Frequently Asked Questions

More Ridiculously Delicious Cookies

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• Red Velvet Sandwich Cookies with Soft, Chewy Centers
• Chocolate Sandwich Cookies with Vanilla Cream with Silky Vanilla Filling
• Raspberry Jam Sandwich Cookies with Buttery Layers
• Bakery-Style Lemon Crinkle Cookies with Soft Centers

Pistachio Sandwich Cookies with Creamy Pistachio Filling

Tender, crisp pistachio sandwich cookies made with finely ground roasted pistachios and filled with a smooth pistachio buttercream. Careful grinding, 5 mm rolling, and two chilling stages keep the cutouts neat and evenly matched.

Print Recipe Pin Recipe

Prep Time 45 minutes mins

Cook Time 28 minutes mins

Cooling 2 hours hrs

Total Time 3 hours hrs 13 minutes mins

Servings: 18 sandwich cookies

Course: Dessert

Cuisine: American

Calories: 261

Ingredients Equipment Method Notes

Ingredients

  

• 120 g roasted unsalted pistachios completely cooled
• 250 g all-purpose flour divided as directed
• 30 g cornstarch
• 1/2 tsp fine sea salt
• 170 g unsalted butter softened to 18 to 20°C
• 110 g confectioners’ sugar sifted
• 1 large egg yolk about 18 g, at room temperature
• 1 tsp pure vanilla extract
• 57 g unsalted butter softened to about 18°C, for the filling
• 70 g smooth unsweetened pistachio butter stirred well before weighing
• 110 g confectioners’ sugar sifted, for the filling
• 1/8 tsp fine sea salt for the filling
• 10 g heavy cream plus up to 5 g only if needed

Equipment

• Digital kitchen scale
• Food processor
• Fine-mesh sieve
• Stand mixer with paddle attachment or electric hand mixer
• Silicone spatula
• Rolling pin with thickness guides
• 6 cm or 2 1/2-inch round cookie cutter
• Two light-colored rimmed baking sheets
• Parchment paper
• Wire cooling rack
• Piping bag fitted with a 12 mm plain round tip

Method

 

1. Place the cooled pistachios and 50 g of the all-purpose flour in a food processor. Pulse in short bursts for 20 to 30 seconds, scraping once, until the nuts resemble fine meal with no pieces larger than coarse sand. Do not run the processor continuously or the pistachios may release oil and become pasty. Add the remaining flour, cornstarch, and salt, then pulse three or four times to distribute everything evenly.
2. Using a stand mixer fitted with the paddle, beat the softened butter and confectioners’ sugar on medium-low speed for about 90 seconds, until smooth and slightly lightened but not fluffy. Scrape the bowl and paddle. Mix in the egg yolk and vanilla on low until no yellow streaks remain. Add the pistachio mixture and mix on low just until moist clumps form. Finish folding with a spatula; the dough should hold together when pressed without feeling sticky or oily.
3. Turn the dough onto a clean work surface and press it together gently without kneading. Divide it into two equal portions, flatten each into a 2 cm-thick disk, and wrap tightly. Refrigerate for 45 minutes, until the dough feels cool and firm but still yields slightly when pressed. If chilled until rigid, let it stand at room temperature for 5 to 10 minutes before rolling so the edges do not split.
4. Line two light-colored baking sheets with parchment. Working with one disk at a time, roll the dough between two sheets of parchment to an even 5 mm thickness, keeping it cool and pliable at roughly 16 to 18°C. Cut 6 cm rounds and transfer them with a thin spatula, leaving 3 cm between pieces. Reroll scraps once without adding flour. Make 36 rounds, arranging 18 per sheet, then freeze both sheets for 15 minutes while the oven heats to 165°C.
5. Set an oven rack in the center and bake one chilled sheet at a time at 165°C for 13 to 15 minutes. Rotate the sheet after 8 minutes for even baking. The cookies are ready when their surfaces look dry and matte, the edges feel set, and the undersides show only faint golden color. Leave them on the hot sheet for 5 minutes, then transfer carefully to a wire rack. Cool completely for about 25 minutes before filling; warm cookies will melt the buttercream.
6. Beat the 57 g softened butter in a clean mixer bowl with the paddle on medium speed for 1 minute, until smooth. Add the stirred pistachio butter and beat for 30 seconds, scraping the bowl. Add the sifted confectioners’ sugar and salt, then mix on low until incorporated. Add 10 g heavy cream and beat on medium for 60 to 90 seconds. The filling should look creamy and hold soft ridges; add up to 5 g more cream only if it remains too stiff to pipe.
7. Turn half of the cooled cookies flat-side up and match them with similarly sized tops. Transfer the filling to a piping bag fitted with a 12 mm plain tip. Pipe approximately 14 g of filling onto each bottom cookie, beginning in the center and leaving a 5 mm border. Place the matching cookie on top and press straight down with light, even pressure until the filling reaches the edge. Twisting can crack the cookies or push the filling unevenly.
8. Arrange the assembled cookies in a single layer and let them stand in a cool room for 30 minutes so the filling can settle and grip both cookies. For cleaner handling in a warm kitchen, refrigerate them for 15 minutes instead, then return them to room temperature before serving. The finished pistachio sandwich cookies should have crisp, tender shells and a smooth center that compresses slightly without squeezing out.

Notes

• Keep the dough cool rather than rock-hard. Dough near 16 to 18°C rolls smoothly and cuts cleanly; warmer dough sticks and spreads, while colder dough cracks around the edges.
• Use rolling guides to maintain a true 5 mm thickness. Uneven cookies bake at different rates and create lopsided sandwiches even when the rounds have the same diameter.
• Bake on light-colored aluminum sheets. Dark pans transfer heat more aggressively and can brown the cookie bottoms before the centers have set.
• Pair the cookies before piping. Matching slight differences in diameter and thickness first produces level sandwiches and prevents a last-minute hunt for suitable tops.
• If the filling looks shiny, slack, or greasy, chill it for 10 minutes and remix briefly. Adding more confectioners’ sugar immediately can make the center unnecessarily sweet and chalky.