This incredible one-pot Black Bean Casserole is going to please the entire family! It’s vegetarian, gluten-free, packed with Mexican flavors, simple to throw together, and can be made in 30 minutes!
While that’s cooking, make the sauce: combine the tomato sauce, vegetable broth, chili powders (all 3 of them), garlic powder, onion powder, and dried oregano in a medium sauce pan over medium heat.
Transfer the mixture to a casserole dish, top with cheese, and bake at 375 degrees for 15 minutes, or until the cheese is melted and bubbly. Top with diced tomatoes and green onions.