1 lb ground beef1/2 onion, diced (optional)1 tablespoon taco seasoning (or mix of chili powder, cumin, garlic powder, and paprika)1 cup uncooked rice (white or brown)
1 cup shredded cheddar cheese1/2 cup sour creamOptional toppings: shredded lettuce, avocado, chopped tomatoes, hot sauce, salsa