Ingredients
Equipment
Method
Step-by-Step Instructions
- Preheat the oven to 350°F (175°C) and prepare two 9-inch round cake pans.
- Combine milk and apple cider vinegar in a bowl and let sit for 5 minutes.
- In a food processor, pulse ground pistachios and sugar, then mix with flour, baking powder, and salt.
- Whisk the buttermilk, olive oil, vanilla, and optional dye together, then combine with dry ingredients.
- Fold wet and dry ingredients together until just combined.
- Divide batter between pans and bake for 25-30 minutes until cooked through.
- Cool cakes in pans for 10 minutes before transferring to a wire rack to cool completely.
- Beat butter until creamy and then add blackberry preserves and powdered sugar to make frosting.
- Assemble the cake by layering with frosting and preserves.
- Garnish with fresh blackberries and chopped pistachios before serving.
Notes
Chill the cake layers overnight for enhanced flavor. Use fresh ingredients for the best results.
