Brownies

1 c. butter
2 c. sugar
2 t. vanilla
4 eggs
3/4 C. cocoa
1 C all-purpose flour
1/2 t baking powder
1/4 t salt

Melt butter. Stir in sugar and vanilla, add eggs one at at time. Add cocoa, beat well. Add flour, baking powder and salt. Bake in 9x13 pan 30-35 minutes on 350