Need heavy cream for a recipe? Use this cheap and easy stand-in, and you won't have to buy any: Ingredients: 3/4 cup milk 1/3 cup butter Preparation: 1. Melt the butter. 2. Pour it into the milk, and stir. 3. Use in place of one cup of heavy cream. Note: This substitute while not whip. Tip: If you use low-fat milk, add a tablespoon of flour to the mixture to thicken.