Pistachio Chocolate Sandwich Cookies are a decadent treat combining soft, brownie-like chocolate cookies with vibrant pistachio buttercream filling and a crunchy pistachio coating.
1 cup (226g) unsalted butter, softened
1 cup (200g) granulated sugar
1/2 cup (100g) light brown sugar
2 large eggs
1 tsp vanilla extract
2 cups (250g) all-purpose flour
3/4 cup (75g) unsweetened cocoa powder
1 tsp baking soda
1/2 tsp salt
1/2 cup (113g) unsalted butter, softened
1/3 cup pistachio paste (unsweetened preferred)
1 3/4 cups (210g) powdered sugar, sifted
2 tbsp heavy cream (adjust as needed)
1/2 tsp vanilla extract
Pinch of salt
Green gel food coloring, 1–2 drops (optional)
1/2 cup chopped roasted pistachios (for rolling edges)
For a milder flavor, use salted pistachio paste but reduce the pinch of salt in the buttercream.
If you prefer a different nut butter, almond or hazelnut paste can be used as a substitute for pistachio paste.
To make the buttercream more colorful, adjust the amount of green food coloring to your preference.
For added decadence, layer chocolate ganache alongside the pistachio buttercream.
The cookies can be made ahead of time and stored for up to 3 days. Assemble just before serving for freshness.