Preheat oven to 350 degrees.
In a large cast iron skillet <or an oven safe skillet>, heat 2 Tbsp avocado oil over medium/high heat. Add ground meat, breaking into pieces. Cook for about 3 minutes - it will not be cooked through yet.
Add the onion and pepper strips to the meat. Cook for 5 - 7 minutes longer, or until the veggies are soft and meat is cooked through.
Add cooked rice, salsa, and black beans. Stir well.
Top with shredded cheese and place the entire skillet into the oven. Bake for 15 - 20 minutes or until cheese is melted and bubbling at the sides.
Remove from oven and allow to cool slightly before serving. Top with avocado, sliced jalapenos, Greek yogurt or sour cream, or anything your heart desires!