Heart Attack Brownies (not frosted)

1 ½ C butter, melted
3 C sugar
1 T vanilla
5 eggs
2 C flour
1 C cocoa
1 t baking powder
1 t salt

Mix butter and sugar in bowl, add vanilla and eggs. In another bowl combine flour, cocoa, baking powder and salt. Pour in butter mix and stir until combined. Bake in preheated oven at 350 in a glass 9x13 pan for 50 minutes.