Preheat oven to 350 degrees. Cook the tortellini per the package instructions, drain and set aside.

In a large skillet over medium-high heat add the Italian sausage and diced onions, allow the meat to cook until no pink is visible. Add in the minced garlic and sauté for 30-45 seconds then drain off any excess grease. Season with Italian seasoning, salt & pepper.

Add in the marinara sauce and tortellini, stir to combine. Top with cheese and bake at 350 for 10 minutes or until the cheese is melted. Serve & enjoy!