Peanut Butter Fondue

2 cups peanut butter
1 (5 1/3 ounce) can evaporated milk
1 cup light brown sugar
1/4 cup margarine
1/8 teaspoon salt
Apple wedges
Marshmallows
Graham cracker pieces
Sliced bananas
Cherries
Seedless grapes

Mix first 5 ingredients well in heavy saucepan. Cook over low heat until well blended and hot. Pour into fondue pot. Use remaining ingredients to dip.