Ingredients
Method
Preparation
- Preheat the oven to 350°F (175°C) and line a 12-cup muffin tin with cupcake liners.
- In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, ground cinnamon, and salt.
- In a large mixing bowl, cream the softened butter and granulated sugar together using a hand mixer or stand mixer on medium speed until light and fluffy, about 3-4 minutes.
- Add the eggs one at a time, beating well after each addition, then stir in the vanilla extract.
Mixing the Batter
- Alternate adding the dry ingredients and sour cream to the butter mixture, starting and ending with the dry ingredients. Mix until just combined.
- Add the milk and gently mix until the batter is smooth and well incorporated.
Making the Cinnamon Swirl
- In a small bowl, mix the brown sugar and ground cinnamon for the swirl. Drizzle the melted butter into the mixture and stir until it forms a paste.
Assembling and Baking
- Spoon a heaping tablespoon of batter into each cupcake liner, then top each with a small spoonful of the cinnamon-sugar mixture.
- Use a toothpick or small knife to swirl the cinnamon mixture into the batter, creating a marbled effect.
- Add another heaping tablespoon of batter on top of each swirl, filling the liners about two-thirds full.
- Bake in the preheated oven for 18-22 minutes, or until a toothpick inserted into the center comes out clean.
- Allow the cupcakes to cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.
Making the Glaze
- While the cupcakes cool, whisk together the powdered sugar, milk, and vanilla extract in a small bowl.
- Once the cupcakes are completely cool, drizzle the glaze over the top of each.
- Allow the glaze to set before serving the cupcakes.
Notes
Store the cupcakes in an airtight container at room temperature for a couple of days or refrigerate for up to 5 days. To refresh slightly stale cupcakes, warm them in a 325°F oven for 5–8 minutes.
