Ingredients
Method
- Whisk the melted butter and sugar in a large bowl until glossy, then whisk in the egg and vanilla.
- Stir in the flour, baking powder, baking soda, and salt until a soft dough forms, then fold in the 1/4 cup sprinkles.
- Press the dough into a parchment-lined 9-inch round cake pan and smooth the top. Bake at 350°F (175°C) for 18 to 20 minutes, until the edges are golden and the center is set but still slightly soft. Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
- Whisk the powdered sugar, 2 tbsp milk, and vanilla for the glaze, adding more milk a few drops at a time until pourable. Drizzle over the cooled cake, top with extra sprinkles, and slice into wedges.
Notes
Let the cake cool all the way before glazing, or the glaze will melt and soak in. If you prefer a thicker frosting, beat 4 tbsp softened butter into the powdered sugar with a fork, then add milk gradually until it's spreadable.
