This smoothie is great when you want something filling that is also packed with tons of protein. You can also add a scoop of peanut butter protein powder if you are trying to up your protein intake. Ingredients: * 1 ripe banana * 1 cup ice cubes * ½ cup whole milk (or alternative milk of your choice) * ¼ cup Greek yogurt * 1 Tbsp. peanut butter * ½ tsp. vanilla extract Instructions: 1. Add all ingredients to a blender and blend until smooth. Add a little more liquid if smoothie is too thick.