Ingredients:
1/2 cup cocoa Cocoa or finely chopped nuts or graham cracker crumbs
1 tablespoon vanilla extract
3/4 cup (1-1/2 sticks) butter (no substitutes)
One can (14 ounces) sweetened condensed milk (not evaporated milk)
1 cup peanut butter chips

Directions:
Melt butter and peanut butter chips in large saucepan over very low heat, stirring often. Add cocoa; stir until smooth. Stir in sweetened condensed milk; stir constantly about four minutes or until mixture is thick and glossy. Remove from heat; stir in vanilla.

Refrigerate two hours or until firm enough to handle. Shape into 1-inch balls; roll in cocoa, nuts or graham cracker crumbs. Refrigerate until firm, about one hour. Store, covered, in refrigerator.

Recipe makes about 3-1/2 dozen candies.

See also:
Peanut Butter Balls
Peanut Butter Pinwheels
Peanut Brittle
Peanut Butter Cup
Candy Peanut Butter Crumble Bars