Combine sauce ingredients: Mix together the marinara sauce, half and half, Worcestershire sauce, hot sauce, oregano, basil, parsley, and mustard powder, then set aside.

Measure ingredients: Gather and prepare all other ingredients before starting the cooking process.

Preheat oven: Set your oven to 375 degrees F.

Boil pasta water: Bring a pot of water to a boil and add salt once boiling.

Season beef: Sprinkle salt and pepper on the ground beef for flavor.

Cook beef: In a large skillet over medium-high heat, brown the ground beef for 3 minutes.

Add onion and garlic: Stir in the diced onion and minced garlic, cooking until softened and beef is completely cooked through, about 5-6 minutes.

Drain grease: Remove any excess grease from the skillet.

Add tomato paste: Mix in the tomato paste, cooking for 1-2 minutes until it’s well incorporated.

Add beef broth: Pour in the beef broth and reduce the liquid by half.

Combine sauce mixture: Stir in the previously prepared sauce mixture and bring to a gentle boil before lowering the heat to a simmer.

Prepare pasta: While the sauce simmers, boil the pasta until it’s just under al dente.

Mix cheese and pasta: Stir in the Parmesan cheese and a quarter of the mozzarella into the sauce, then add the drained pasta and toss to combine.

Transfer to baking dish: Pour the pasta and meat mixture into a greased 9 x 13-inch dish.

Add remaining mozzarella: Top the casserole with the remaining mozzarella cheese.

Bake and broil: Bake uncovered for 10 minutes, then broil at 450 degrees for an additional 1-2 minutes until golden brown.

Let stand: Allow the casserole to stand for 5 minutes before serving, garnished with fresh parsley.

Serve: Enjoy with garlic bread or salad on the side.