This is my go-to Homemade Protein Bars recipe! Made with a 4-ingredient protein bar base and a melted chocolate topping, these peanut butter protein bars are SO good. I love that they have 15 grams of protein and are the best healthy snack for busy days! If you’re looking to save money by meal prepping and making your own protein bars at home, you’ll love how this recipe tastes like a peanut butter chocolate treat.