Irresistible Brownies

1 c. butter
2 c. sugar
1 ½ c. flour
½ c. cocoa
½ tsp baking powder
¼ tsp salt
2 tsp vanilla
4 eggs
chocolate & butterscotch chips

Melt butter. Add all ingredients and mix. Add ¼- ½ bag of chocolate and butterscotch chips. Mix again. Grease & flour a 9x13 pan; pour brownies into pan and sprinkle chips on top. Bake at 350* for 25 minutes.