Ingredients
Equipment
Method
Make the cupcakes
- Heat the oven to 350°F and line a standard 12-cup muffin pan with paper liners.
- Whisk the flour, baking powder, baking soda, cinnamon, and salt together in a medium bowl.
- Whisk the oil and brown sugar together in a large bowl until combined.
- Whisk in the eggs one at a time.
- Whisk in the sour cream and vanilla.
- Fold in the flour mixture just until no dry streaks remain.
- Fold in the diced apple.
- Divide the batter evenly among the liners.
- Bake for 20–24 minutes, until a toothpick inserted into the cake (not an apple piece) comes out with a few moist crumbs.
- Cool the cupcakes in the pan for 5 minutes.
- Transfer the cupcakes to a wire rack and cool completely.
Make the caramel frosting and drizzle
- Beat the softened butter in a large bowl until creamy.
- Gradually beat in the powdered sugar on low speed.
- Beat in 3 tablespoons of the caramel sauce and the heavy cream until the frosting is smooth and spreadable.
- Spread the frosting over the cooled cupcakes.
- Warm the remaining 2 tablespoons of caramel sauce in a microwave-safe bowl for 5–10 seconds.
- Drizzle the caramel sauce over the cupcakes.
Notes
For tender cupcakes, stop folding as soon as no dry streaks remain. Store covered in the refrigerator for up to 3 days; freeze unfrosted cupcakes for up to 2 months. For a gluten-free variation, use a 1:1 gluten-free baking flour.
