Step 1

Preheat the oven to 375 degrees. Coat a 9" x 13" pan with cooking spray.

Step 2

Place the taco sauce and salsa in a bowl and stir until combined. Spread the salsa mixture in an even layer at the bottom of the prepared pan.

Step 3

Heat the vegetable oil in a large pan over medium heat. Add the onion and cook for 3-4 minutes or until translucent.

Step 4

Add the ground beef and taco seasoning to the pan. Cook, breaking up the meat with a spatula, for 5-6 minutes or until beef is cooked through.

Step 5

Fill the pasta shells with the beef mixture and place them in the pan on top of the salsa sauce.

Step 6

Sprinkle the cheese over the top of the shells.

Step 7

Bake, uncovered, for 20 minutes or until cheese is melted and sauce is bubbly.

Step 8

Sprinkle with chopped cilantro and serve.