1/2 c. peanut butter, crunchy
1/3 c. softened butter
3/4 c. granulated sugar
3/4 c. firmly packed brown sugar
2 eggs
2 tsp. baking powder
1/4 tsp. salt
12 oz. pkg. chocolate chips

In large bowl combine peanut butter, sugars, and butter. Beat until creamy. Gradually beat in 2 eggs and 2 teaspoon baking powder, and 1/4 teaspoon salt. Blend into peanut butter mixture. Spread into greased 13 x 9 x 2 inch baking pan. Sprinkle 1 (12 ounce) package chocolate chips over surface. Place at 350 degrees for 5 minutes. Remove from oven; run knife through to marbelize. Return to oven. Bake at 350 degrees for 30 minutes. Cool. Cut into 2 x 1 inch bars.