Basic Sugar Cookies

1½ cups butter
2 cups sugar
4 eggs
7 cups flour
2 tbsp. baking powder
1 tsp. salt
2/3 cup milk
1 tsp. vanilla

Cream butter and sugar. Add eggs. Add sifted dry ingredients alternately with milk and vanilla. Mix in the last half of the flour by hand. Roll out dough to desired thickness. Cut in desired cookie-cutter shapes. Bake at 350 for 10 minutes.