Ingredients
Method
Preparation
- Preheat your oven to 350°F (175°C) and line a cupcake pan with paper liners.
- In a large bowl, combine the flour, sugar, cocoa powder, baking powder, baking soda, and salt. Whisk together until evenly mixed.
- In another bowl, whisk together the oil, eggs, vanilla extract, and buttermilk. Slowly add this mixture to the dry ingredients, stirring until just combined.
- Carefully stir in the boiling water (the batter will be thin).
Baking
- Pour the batter into the prepared cupcake liners, filling each about two-thirds full.
- Bake for 18-20 minutes, or until a toothpick inserted in the center comes out clean.
- Allow the cupcakes to cool in the pan for 5 minutes before transferring them to a wire rack to cool completely.
Frosting
- In a mixing bowl, beat the softened butter until creamy, then gradually add the powdered sugar.
- Mix in the blackberry puree, vanilla extract, and a pinch of salt until you reach a smooth and fluffy consistency.
- Once the cupcakes are completely cool, generously pipe the blackberry buttercream on top of each cupcake.
Notes
Store leftover cupcakes in an airtight container at room temperature for up to 3 days, or refrigerate for about a week. For freezing, wrap them well to stay fresh for up to 2 months.