Here’s an incredibly simple, but delicious Greek Yogurt Peanut Butter Protein Bars recipe that you can make ahead for your next on-the-go breakfast or post-workout snack. Featuring Greek yogurt and good old peanut butter, these bars are rich and creamy on the inside, and sweet and chocolatey on the outside. High on fiber, low carbs and low sugar, these breakfast bars are quick and nutritious and will help you keep you full and focused in the morning.