Green Monster Smoothie Browse more: Recipes Ingredients 1 cup fat-free milk0.5 cup fat-free plain yogurt1 banana, frozen and chunked1 tablespoon natural peanut butter2 cups fresh spinach1 cup ice cubes Steps Blend milk, yogurt, banana, peanut butter, spinach, and ice cubes until smooth. Previous recipe: Chewy Brownie Cookies Next recipe: Simple Baked Rice