- Olive oil for pan (about 2 teaspoons)
- 1 small onion, diced
- 1 pound ground beef
- 1 (15-ounce) can black beans, rinsed and well drained
- 1 cup chunky salsa or 1 (10-ounce) can drained Rotel diced tomatoes with green chilies (I like original; may choose a spicier option)*
- 1 (1-ounce) taco seasoning packet (or homemade alternative)
- 12-14 hard taco shells
- 1 to 1-1/2 cups shredded cheddar or Mexican blend cheese
- Optional toppings: diced tomatoes and/or salsa, shredded lettuce, chopped avocado or guacamole, sliced black olives, sour cream, hot sauce, sliced jalapeños, etc.