2 c. peanut butter (creamy)
1/2 c. melted butter
2 1/2 c. powdered sugar
1/2 c. light brown sugar
1/2 tsp. vanilla

Mix all together and press into 9 x 13 pan. Place in freezer until slightly hardened.

ICING:

12 oz. choc. chips (semi-sweet)
3/4 tbsp. water
2 tbsp. butter

Spread chocolate mixture over top of peanut butter mixture until completely covered. Cool in freezer until it can be cut. Cut into desired pieces.