Microwave Peanut Butter Fudge
["1 box confectioners sugar, sifted", "1/4 tsp. salt", "2/3 c. milk", "1/2 stick butter or margarine (1/4 c.)"]
["Cook 2 minutes or until butter is melted.", "Stir vigorously until smooth.", "Add 1 cup peanut butter.", "Stir well.", "Pour quickly into a 10 x 6 x 2-inch buttered dish.", "Sets up quickly."]
["confectioners sugar", "salt", "milk", "butter"]