Brown the beef, onion and garlic in a large skillet or stock pan. Drain off any excess grease.
Then stir in the taco seasoning, salsa, tomato sauce, beef broth and pasta shells.
Stir to combine and bring the mixture to a boil.
Cover and reduce the heat to low and simmer over medium-low heat stirring occasionally for approximately 20 minutes or until the pasta is tender.
Remove from heat and stir in 1 cup of the shredded cheddar cheese.
