Ingredients
Method
Preparation
- Preheat the air fryer to 350°F (175°C) and line a 12-cup muffin tin with paper liners.
- In a bowl, whisk together the flour, cocoa powder, baking powder, baking soda, and salt until well combined.
- In another bowl, mix the egg, milk, vegetable oil, and vanilla extract. Gently combine the wet and dry ingredients without over-mixing; a few lumps are okay.
- Dissolve the instant espresso powder in the boiling water, then stir it into the batter until fully incorporated.
- Fill the muffin cups about two-thirds of the way with batter. Air fry for 16-18 minutes, or until a toothpick inserted comes out clean.
- Let the cupcakes cool in the tin for about 10 minutes before transferring them to a wire rack to cool completely.
Frosting and Caramel Filling
- For the frosting, beat the softened butter until creamy, then gradually mix in the cocoa powder and powdered sugar, adding heavy cream until you achieve your desired consistency.
- For the caramel filling, melt the sugar in a saucepan over medium heat. Once it turns golden brown, whisk in the diced butter and heavy cream. Allow it to cool slightly before using.
- Once the cupcakes are completely cool, pipe the chocolate frosting on top, then fill the center with the warm caramel sauce.
Notes
Sifting the dry ingredients helps prevent lumps. Incorporating boiling water activates cocoa powder and enhances chocolate flavor. Ensure ingredients are at room temperature for better emulsification. Avoid overmixing for tender cupcakes. Cool completely before frosting to maintain shape.
