Chocolate Bars

2 cups peanut butter, divided 3 cups graham cracker crumbs
3/4 c butter (1 1/2 sticks), softened 2 cups chocolate chips (12 oz pkg)
2 cups powered sugar, divided divided

GREASE 13x9-inch baking pan.

BEAT 1 1/4 cups peanut butter and butter in large mixer bowl until creamy. Gradually beat in 1 cup powdered sugar. With hands or wooden spoon, work in remaining 1 cup powdered sugar, graham cracker crumbs and 1/2 cup morsels. Press evenly into prepared baking pan. Smooth top with spatula.

MELT remaining 3/4 cup peanut butter and remaining 1 1/2 cups chocolate chips in medium, heavy-duty saucepan over lowest possible heat, stirring constantly until smooth. Spread over graham cracker crust in pan. Refrigerate for at least 1 hour or until chocolate is firm. cut into bars. Store in covered container in refrigerator.