2 c. unsifted flour
2 tsp. baking powder
1 tsp. salt
3/4 c. softened butter
3/4 c. sugar
3/4 c. firmly packed brown sugar
1 tsp. vanilla
3 eggs
12 oz. chocolate chips

Combine butter sugar, brown sugar and vanilla. Add eggs to butter and sugar mixture one at a time beating well after each addition. Gradually add dry mixture. Mix well and stir in chocolate chips. Spread evenly into well greased pizza pan. Bake at 350 degrees (preheated) for 30 minutes.