4 cups sifted all-purpose flour
2 teaspoons baking powder
1 1/2 cups sugar
2 eggs
3/4 cup butter (1 1/2 sticks)
2 teaspoons vanilla extract
Colored Icing, recipe follows
1/2 cup confectioners¿ sugar
1 1/2 tablespoons water
3 to 4 drops food coloring, plus more as needed
Colored sprinkles, optional