Taco Lettuce Wraps

Name: Taco Lettuce Wraps
Prep time: 15 min
Total time: 15 min
Cuisine: American, Mexican, Latin American, TexMex
Ingredients: 1 pound lean ground beef; 1 small white onion (chopped); salt and pepper (to taste); 1 teaspoon ground cumin; 1/2 teaspoon garlic powder; 1 can (8 ounces) corn (drained then rinsed); 1 can (15 ounces) black beans (drained then rinsed); 1 head butter lettuce; 1 tomato (chopped); 1 cup shredded cheddar cheese; salsa, sour cream, guacamole, etc