Preheat oven to 350 degrees

Spray 9 inch cake pan with cooking spray and set aside

In a medium mixing bowl, whisk together melted butter, granulated and brown sugar, egg, sour creeam, milk and vanilla. Mix until well combined.

Add in flour, baking powder, baking soda, salt, and stir until combined. Do not over mix.

Gently fold in the sprinkles. Mix only a few times so that the colors dont bleed in to the batter.

Pour batter in to prepared cake pan and cake for 30-40 minutes unitl the center is done. Let cool on baking rack before frosting.

Combine ingredients for Buttercream Frosting and mix with electric mixer until smooth and fluffy. Frost cooled cake and sprinkle with more candies.

Enjoy!