Cook the Beef: Heat a large skillet over medium-high heat. Add the ground beef and cook until browned, breaking it up into small crumbles, about 5-7 minutes. Drain any excess fat.

Add Aromatics: Add the chopped onion and minced garlic to the skillet with the beef. Cook until the onions are softened and translucent, about 3-4 minutes.

Season: Stir in the Italian seasoning, salt, and black pepper. Cook for an additional 1 minute, allowing the spices to meld with the meat and aromatics.

Add Sauce: Pour in the marinara sauce, stirring well to combine with the beef mixture. Bring the sauce to a simmer.

Incorporate Cream Cheese: Cut the cream cheese into smaller chunks and add them to the skillet. Stir until the cream cheese is fully melted and integrated into the sauce, creating a creamy texture.

Add Tortellini: Stir in the frozen tortellini, ensuring they are well coated with the sauce. Cover the skillet and cook for about 10-12 minutes, stirring occasionally, until the tortellini are heated through and tender.

Add Mozzarella: Sprinkle the shredded mozzarella cheese evenly over the top of the skillet. Cover and cook for an additional 2-3 minutes, or until the cheese is melted and bubbly.

Serve: Remove from heat and let the skillet sit for a couple of minutes. Serve hot, garnished with additional Italian seasoning or fresh basil if desired. Enjoy the hearty flavors of this pizza-pasta fusion!