Ingredients
Scale
- 1 cup unsalted butter, browned
- 1 and 1/2 cups granulated sugar
- 1/4 cup light brown sugar, packed
- 1 and 1/2 teaspoons vanilla extract
- 4 large eggs, at room temperature
- 2 and 1/4 cups all-purpose flour
- 1/4 cup cornstarch
- 2 teaspoons baking powder
- 1/2 teaspoon baking soda
- 1/2 teaspoon salt
- 1 and 1/4 cups full-fat sour cream
- 1/2 cup whole milk
- 1/2 cup rainbow sprinkles
- 1 and 1/2 cups unsalted butter, very soft
- 4 cups confectioners' sugar, sifted
- 2 tablespoons heavy cream (more if needed)
- 1/4 teaspoon salt
- 2 teaspoons bourbon or vanilla extract (optional)
- Extra sprinkles for decorating
Instructions
- Brown the butter in a saucepan until amber.
- Preheat oven to 350°F and prepare cake pans.
- Mix browned butter, sugars, and vanilla until fluffy.
- Add eggs one at a time, mixing well.
- Whisk dry ingredients in another bowl.
- Combine wet and dry ingredients without overmixing.
- Fold in sour cream, milk, and sprinkles.
- Divide batter into pans and bake for 33-35 minutes.
- Cool cakes before frosting.
- Beat soft butter for frosting, add sugar, cream, and seasoning.
- Frost cooled cake layers and decorate with sprinkles.
Notes
Ensure the butter is browned well for a rich flavor.
Don’t overmix to maintain a light texture.
Room temperature ingredients help with mixing.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Calories: 450
- Sugar: 39
- Sodium: 205
- Fat: 23
- Saturated Fat: 14
- Unsaturated Fat: 7
- Trans Fat: 0
- Carbohydrates: 57
- Fiber: 1
- Protein: 4
- Cholesterol: 90