01 -
Preheat oven to 350°F (175°C) and line a muffin pan with cupcake liners.
02 -
In a bowl, whisk together flour, cocoa powder, baking soda, and salt. Set aside.
03 -
In a separate large bowl, beat together granulated sugar, brown sugar, and oil until combined.
04 -
Add eggs, sour cream, espresso, and vanilla extract. Mix until smooth.
05 -
Gradually add the dry ingredients to the wet mixture, stirring until just combined.
06 -
Divide the batter evenly among the cupcake liners.
07 -
Bake for 16–18 minutes, or until a toothpick inserted comes out clean. Let cool completely.
08 -
For the buttercream, beat softened butter until fluffy. Gradually add powdered sugar.
09 -
Add salted caramel sauce, cream, and a pinch of salt. Beat until smooth and creamy.
10 -
Pipe or spread the buttercream onto cooled cupcakes and drizzle with additional salted caramel.