There are many different ways that you can spice up a protein shake. You can change up the type of milk that you use. In this recipe, I used low-fat cow’s milk, but you could instead try it with soy milk, oat milk, or almond milk. Additionally, you can try protein shakes with different types of nut butter, such as peanut butter or sunflower butter. If you like to add protein powder to your shakes, you can experiment with different flavors of that to switch it up. Adding spices, such as cinnamon or nutmeg, is another way to enhance the flavors of your protein shake.