Meal prep made easy with this healthy Onion and Cumin Beef Stir-fry! This dish is not only quick to make but also packed with nutritious ingredients. Tender beef is marinated and stir-fried with sweet onions and colorful bell peppers, all enhanced by the aromatic ground cumin. Perfect for lunches or quick dinners, this stir-fry can be made ahead of time and reheated without losing its delicious flavor. Store it in airtight containers for up to three days, allowing you to enjoy a tasty, balanc...