1 cup milk chocolate chips
2 cups (12 ounces) vanilla milk chips or almond bark
2 cups peanut butter chips
1/2 cup chopped peanuts

Line jellyroll pan with foil. In microwave, melt 3 types of chips separately, stirring until smooth. Pour melted peanut butter chips into prepared pan, spreading level. Sprinkle on peanuts. Pour melted vanilla and chocolate chips on top, drizzling each randomly. To marbleize, use knife to pull through chocolate in wide curves. Refrigerate until set. Break into squares.