Ingredients
Equipment
Method
Make the cupcake batter
- Whisk together all-purpose flour, baking powder, and salt in a mixing bowl until evenly combined.
- Beat softened butter with granulated sugar until light and fluffy, about 2 minutes.
- Add eggs one at a time, beating well after each addition.
- Alternate adding the flour mixture and sour cream to the butter mixture, beginning and ending with flour.
- Add vanilla extract and whole milk and mix just until the batter looks smooth.
Bake and cool
- Fill cupcake liners about 3/4 full with batter.
- Bake at 350°F for 18 minutes, until a toothpick comes out clean.
- Cool cupcakes completely before frosting so the frosting stays thick.
Frost and finish
- Beat softened butter with powdered sugar until fluffy.
- Mix cinnamon with granulated sugar for the cinnamon-sugar coating.
- Pipe frosting onto the cooled cupcakes.
- Roll the frosted tops in the cinnamon-sugar mixture so the coating clings evenly.
- Top each cupcake with a small churro stick or churro piece.
- Drizzle with melted dark chocolate if desired, then serve.
Notes
For the cleanest, best-rolling frosting topping, cool the cupcakes fully before piping; warm cupcakes can cause the cinnamon-sugar coating to slide. Store in an airtight container in the fridge up to 3 days, then bring to room temperature before serving. Freeze cupcakes (uncoated) up to 2 months; thaw overnight in the fridge and frost after. For a lighter option, use low-fat sour cream and butter spread in both batter and frosting, keeping the texture similar.
