Prepare the Beef: Heat olive oil in a large skillet over medium-high heat. Add the ground beef and cook, breaking it up with a spoon, until browned. Drain off any excess grease.

Add Aromatics: Add the chopped onion and bell peppers to the skillet with the beef. Cook until softened, about 5-7 minutes. Add the minced garlic and cook for another minute until fragrant.

Simmer the Sauce: Stir in the diced tomatoes (with their juice), soy sauce, Worcestershire sauce, smoked paprika, garlic powder, salt, and pepper. Bring to a simmer and cook for 10-15 minutes, stirring occasionally, allowing the sauce to thicken slightly.

Incorporate Vegetables: Add the frozen peas and carrots to the skillet. Cook until heated through, about 3-5 minutes.

Assemble the Meal Prep Bowls: Divide the cooked brown rice evenly among 4-6 meal prep containers. Top with the beef and vegetable mixture.

Cool and Store: Allow the meal prep bowls to cool completely before sealing and refrigerating. Store in the refrigerator for up to 4 days.

Reheat: Reheat in the microwave for 2-3 minutes, or until heated through. Garnish with green onions, sesame seeds, or sriracha (optional) before serving.