Ingredients
For the Cake:
- 1 1/2 cups unsalted pistachios (divided and shelled)
- 2 1/2 cups cake flour
- 3/4 cup all-purpose flour
- 1 tablespoon baking powder
- 1 teaspoon baking soda
- 1 teaspoon coarse kosher sea salt
- 1 cup unsalted butter (softened)
- 1 3/4 cups granulated sugar
- 1 tablespoon vanilla extract
- 3/4 teaspoon almond extract
- 1 large egg
- 1 cup whole milk
- 1/2 cup sour cream
- 3 egg whites
- 1/2 teaspoon cream of tartar
For the Frosting:
- 1 1/2 cups unsalted butter (softened)
- 2 teaspoons vanilla extract
- 1/4 teaspoon coarse kosher sea salt
- 6 cups powdered sugar
- 1 1/2 cups mascarpone cheese
- Reserved 1/4 cup chopped pistachios (for topping)
- Large sea salt flakes (for garnish)
Instructions
- Prepare Baking Pans: Preheat your oven to 350°F (177°C). Grease or spray three 9-inch round cake pans, dust with flour, then line the bottoms with parchment paper rounds. Set aside to ensure the cakes release easily after baking.
- Grind Pistachios: Using a food processor, pulse 1 1/4 cups of the shelled pistachios until finely ground into a powder. This will add a nutty texture and flavor to the cake batter.
- Mix Dry Ingredients: In a medium bowl, whisk together the ground pistachios, cake flour, all-purpose flour, baking powder, baking soda, and kosher salt, ensuring an even distribution of leavening agents and salt.
- Cream Butter and Sugar: In a stand mixer bowl, beat the softened butter on high speed until smooth and creamy, about 2 minutes. Gradually add the granulated sugar and continue beating for another 2 minutes to incorporate air for a light sponge.
- Add Flavors and Egg: Mix in the vanilla extract, almond extract, and the large egg until fully combined, giving the batter aromatic depth and richness.
- Combine Dry and Wet Ingredients: On low speed, alternately add the dry ingredients and the combined whole milk and sour cream to the butter mixture. Mix just until a few dry streaks remain to avoid overmixing, which can toughen the cake.
- Whip Egg Whites: In a separate medium bowl, beat the 3 egg whites along with cream of tartar using a hand mixer until stiff peaks form. This step adds volume and airiness to the cake.
- Fold Egg Whites Into Batter: Gently fold the beaten egg whites into the cake batter using a rubber spatula until fully incorporated, maintaining as much air as possible.
- Divide and Bake: Evenly distribute the batter among the prepared pans. Bake in the preheated oven for 35-40 minutes, or until the tops spring back when lightly touched and a toothpick inserted comes out clean.
- Cool the Cake Layers: Remove cakes from the oven and allow them to cool in pans for 15 minutes. Then invert each cake onto a wire rack and cool completely before frosting.
- Make the Frosting: In the stand mixer bowl, beat softened butter on high until creamy, about 2 minutes. Add vanilla extract, salt, and powdered sugar; mix until smooth and fully combined. Then add mascarpone cheese and mix on low speed for 10 seconds before folding by hand to create a smooth and creamy buttercream.
- Assemble the Cake: Place the first cake layer on your serving plate and spread 1/4 of the frosting evenly over it. Repeat with the second layer and another 1/4 frosting. Top with the final layer, then spread the remaining frosting over the top and sides of the cake.
- Garnish: Chop the reserved 1/4 cup pistachios and sprinkle them along the cake’s top edges. Finish with a pinch or two of large sea salt flakes for a delightful contrast in flavor. Serve and enjoy your Pistachio Dream Cake!
Notes
- Make sure all your ingredients, especially butter, are at room temperature for best mixing results.
- Do not overmix the batter to maintain a tender crumb.
- Folding in egg whites gently will ensure a light and airy cake texture.
- If mascarpone is unavailable, substitute with cream cheese, but mascarpone provides a richer taste.
- To keep the cake moist, store it covered at room temperature or refrigerated if not served within a day.
- Prep Time: 30 minutes
- Cook Time: 40 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American