Oven Baked Beef Tacos

Taco shells (8-10 (depends on how full you want each taco))

Ground beef (1 lb)

Onion (diced, 1/4 cup)

Salsa (3/4 cup)

Taco seasoning (1 tbsp)

Black beans (1 can)

Taco blend shredded cheese (2 cups)

Lettuce (shredded, 1 cup)

Red peppers (diced, 1/2 cup)