Preheat oven to 350 degrees and line a cupcake pan with paper liners.

Ina medium sized bowl, whisk together egg whites, vanilla, and milk.

In a large mixing bowl; add dry ingredients. Blend the dry ingredients with butter and half of the liquid mixture.

Then add the remaining mixture, and mix until combined.

Fold in sprinkles and fill paper liners half way with batter.

Bake for 18-20 minutes.

Frost with your favorite frosting and garnish with more sprinkles.