3/4 c. butter, melted
1 1/2 c. sugar
1 1/2 tsp. vanilla
3 eggs
3/4 c. unsifted all-purpose flour
1/2 c. unsweetened cocoa
1/2 tsp. baking powder
1/2 tsp. salt
1 c. Reese's Peanut Butter Chips

Blend butter, sugar and vanilla in medium bowl. Add eggs; beat well with spoon. Combine flour, cocoa, baking powder and salt; gradually add to egg mixture until well blended. Stir in peanut butter chips.