Marbled Peanut Butter Chocolate Fudge

* 4 cups sugar
* 1 can (12oz) evaporated milk
* 1 cup butter or margarine
* 1 jar (7oz) marshmallow cream
* 3 pkgs (6oz) semisweet chocolate chips, 18 ounces total, or about 3 cups
* 1 tablespoon vanilla
* 1 cup peanut butter

Preparation:
Combine sugar, milk and butter in a heavy saucepan; bring to a boil and cook for 8 minutes, stirring constantly. Add marshmallow cream, chocolate chips and vanilla; stir to blend. Pour half of mixture into a buttered 13- x 9- x 2-inch pan; dollop with spoonfuls of peanut butter. Spoon remaining chocolate mixture over the peanut butter. Gently swirl the mixture with a knife to create a marble effect. Chill until firm; cut into 1-inch pieces and store in an airtight container in the refrigerator.
Makes about 5 pounds.