Cook Your Rice: Start by preparing your preferred rice according to package directions using water or broth for added flavor.
Brown the Meat: In a large deep non-stick skillet or Dutch oven over medium heat, add the ground beef along with salt and pepper. Cook until just barely cooked through.
Sauté Vegetables: Add the diced green and red bell peppers along with the onion into the same pan. Sauté until they start to soften, then add minced garlic and sliced zucchini.
Combine Ingredients: Add in the tomato sauce, drained diced tomatoes, worcestershire sauce, and season with additional salt and pepper. Reduce heat to low and simmer until heated through.
Finish With Cheese: If serving immediately, sprinkle shredded cheese over the mixture and cover until melted. If prepping meals for later, portion out rice into containers followed by the unstuffed pepper mixture topped with cheese.