Prepare the pistachios
Preheat your oven to 350°F (175°C).
In a food processor, pulse the pistachios until finely ground, leaving some texture for a delightful pistachio crunch.
Mix the dry ingredients
In a medium bowl, whisk together the flour, baking powder, and salt. Set aside.
Make the batter
In a large bowl, beat the eggs and sugar together until light and fluffy, about 3-4 minutes.
Add the vanilla extract and melted butter, and mix until fully combined.
Gradually add the ground pistachios to the wet mixture, mixing until incorporated.
Slowly add the dry ingredients (flour mixture), alternating with the milk. Mix gently until smooth.
Add the raspberries
Carefully fold the raspberries into the batter, being mindful not to break them apart too much. This keeps the berries intact for bursts of flavor in each bite!
Bake the cake
Pour the batter into a greased 9-inch round cake pan and smooth the top with a spatula.
Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
Let the cake cool in the pan for 10 minutes, then remove it from the pan and allow it to cool completely on a wire rack.
Serve and enjoy
Once cooled, dust the top with powdered sugar for a sweet finish.
Slice and serve! This cake is delicious on its own or with whipped cream or vanilla ice cream on the side.