1 lb. milk chocolate
1 lb. white chocolate
1 1/4 c. Reese's creamy peanut butter

In separate containers, at the same time, melt in microwave for 2 to 3 minutes:

1:

1 lb. milk chocolate
1/4 c. peanut butter

2:

1 lb. white chocolate
1 c. peanut butter

Stir to make smooth. Pour milk chocolate mix into 9"x13" pan. Pour white chocolate mix on top of milk chocolate mix. Marbleize. Put into refrigerator for not more than one hour. Cut into squares and store in refrigerator or cool spot. Serve at room temperature.