1/4 teaspoon egg
2 teaspoons flour
Pinch baking powder
Pinch baking soda
1/2 teaspoon sugar
1 1/2 teaspoons butter, softened
In a bowl, whisk egg. In a separate bowl, combine flour, baking soda, baking powder and sugar. Stir in egg and butter.
Place mixture in cupcake mold, and bake at 350 degrees for 5 minutes. Top with frosting and sprinkles.