In a small bowl, mix the cornstarch, Italian seasoning, garlic powder, onion powder, salt, and pepper until well combined; set aside.
1 tablespoon corn starch, 1 tablespoon Italian seasoning, 1 teaspoon garlic powder, 1 teaspoon onion powder, ½ teaspoon salt, ¼ teaspoon black pepper
In a large skillet over medium-high heat, brown the ground beef until fully cooked. Drain excess grease if not using lean ground beef. Add the marinara sauce and beef broth and bring to a boil, add the seasoning mix and milk.
1 lb lean ground beef, 2 cups marinara sauce, 1 cup beef broth, ½ cup milk
Add the pasta, return the mixture to a boil, then reduce the heat to medium-low. Simmer for about 15 minutes, or until the pasta is tender and most of the liquid has been absorbed.
2 cups bowtie pasta
Sprinkle mozzarella and parmesan over the top and pop the skillet under the broiler for 2–3 minutes, or until the cheese is melted and bubbly.
1 cup shredded mozzarella cheese, ½ cup shredded parmesan cheese