18 oz. white chocolate 1/4 C. milk 1 C. shortening 1 C. butter 2 tsp. vanilla 8 C. powdered sugar 1/4 C. milk
Microwave chocolate and 1/4 C. milk on medium high for 1-2 min. Stir halfway through cooking time.Cream butter and shortening. Add vanilla. Gradually add sugar, beating well on medium after each addition. The frosting will seem really dry at this point. Add 1/4 C. milk, beating at medium until light and fluffy. Beat in chocolate. I cut this recipe in half and I'd say it still made about 3 or 4 cups of frosting.