Food & Cooking Recipes Cream Filling 2.9 (8) Close Credit: Jonathan Lovekin Prep Time: 6 mins Total Time: 6 mins Yield: Makes 1 1/4 cups, enough to fill about 60 sandwich cookies of various sizes If making both Pink Heart Sandwich Cookies and the Chocolate Heart Sandwich Cookies, just double this recipe. Directions Beat butter with a mixer on medium-high speed until light and fluffy, about 3 minutes. Reduce speed to low, and gradually add sugars, beating until thoroughly combined. Beat in vanilla. If filling is too thick to spread, beat in milk, 1 tablespoon at a time, until spreadable.