Cook your rice according to the package and set aside, keeping it warm.
In a large cast iron skillet over medium heat, sauté the diced onion and garlic for 3-4 minutes.
Add in the bell pepper, zucchini, and black beans.
Stir in the enchilada sauce and let simmer for 15 minutes.
Top with shredded cheese and continue to let simmer for 3-5 minutes until the cheese is melted.
Serve over rice and enjoy!