01 -
Preheat the oven to 350°F (175°C).
02 -
Cook the cheese tortellini according to the package instructions. Drain and set aside.
03 -
In a large skillet over medium-high heat, add the Italian sausage and diced yellow onion. Cook until the meat is no longer pink.
04 -
Add the minced garlic to the skillet and sauté for 30-45 seconds. Drain off any excess grease.
05 -
Season the mixture with Italian seasoning, salt, and black pepper.
06 -
Add marinara sauce and cooked tortellini to the skillet. Stir to combine.
07 -
Transfer the mixture to an oven-safe dish, top with shredded mozzarella cheese, and bake at 350°F (175°C) for 10 minutes or until the cheese is melted.
08 -
Serve and enjoy your dish warm.