Deep Dish Brownies
["3/4 c. butter or margarine, melted", "1 1/2 c. sugar", "1 1/2 tsp. vanilla extract", "3 eggs", "3/4 c. all-purpose flour", "1/2 c. Hershey's cocoa", "1/2 tsp. baking powder", "1/2 tsp. salt", "1 c. Reese's peanut butter or Hershey's semi-sweet chocolate chips"]
["Heat oven to 350\u00b0.", "Grease square pan, 8 x 8 x 2-inch.", "In medium mixing bowl, blend melted butter, sugar and vanilla.", "Add eggs; beat well with a spoon."]
["butter", "sugar", "vanilla extract", "eggs", "all-purpose", "cocoa", "baking powder", "salt", "butter"]