Pour salsa on bottom of a 9×13 baking dish. Stuff each shell with 1-2 tablespoons of the meat mixture. Place shells in 9×13 pan open side up. Evenly cover shells with taco sauce. Cover dish with foil and bake for 15-20 minutes.
After 15-20 minutes, add shredded cheese and bake for 5-10 more minutes with the foil removed until cheese melts. Top with green onions or olives if desired. Serve with sour cream and/or more salsa.
Source: The Way to His Heart