Ingredients
Equipment
Method
- Preheat oven to 350°F (175°C) and line muffin tins with paper liners.
- In a large bowl, whisk together flour, granulated sugar, brown sugar, cocoa powder, baking soda, baking powder, and salt.
- Add eggs, oil, buttermilk, and vanilla. Beat on medium speed for 2 minutes until well combined.
- Lower speed and carefully pour in hot boiling water. Mix just until combined (batter will be thin).
- Fill cupcake liners halfway. Bake 18-22 minutes until a toothpick comes out clean. Cool completely on a wire rack.
- For the filling: Simmer 2 cups raspberries, sugar, and lemon juice for 5-7 minutes. Stir in cornstarch slurry and cook 1-2 minutes until glossy and thick. Cool completely.
- For the frosting: Beat softened butter until pale. Gradually add sifted powdered sugar. Add strained raspberry reduction, vanilla, and salt. Beat until fluffy.
- Assembly: Core the center of each cooled cupcake. Fill the cavity completely with the gooey raspberry filling.
- Pipe the raspberry buttercream over the top to seal the filling. Garnish with a fresh raspberry and dark chocolate chunks.
Notes
Store in an airtight container at room temperature for up to 2 days, or in the refrigerator for up to 4 days. Bring to room temperature before serving.