Heat a large skillet over medium-high heat. Add the ground beef, sausage, and onions and cook for 4 minutes. Add the peppers and cook for 5 more minutes, or until the meat is browned and cooked through. Drain grease.
Reduce heat to medium. Add beef broth and use a silicone spatula to clean the bottom and sides of the skillet. Add the garlic, Worcestershire sauce, hot sauce, and seasonings. Stir to combine and heat for 1 minute.
Add the marinara and pizza sauce and stir to combine. Let it simmer, partially covered, while you boil the pasta for 1 minute less than al dente according to package instructions.
Reduce the heat of the sauce to low and stir in the Parmesan cheese.
Drain the pasta and add it to the skillet. Stir to combine.
Transfer to a lightly greased 9 x 13-inch casserole dish if your skillet isn’t oven safe to 450 degrees.
Top with mozzarella and then with pepperoni.
Cover and bake for 10 minutes. (If covering with foil, spray one side with non-stick cooking spray to prevent it from sticking to the cheese while it bakes.)
Uncover, and bake for 15 minutes, or until your desired color is obtained on the top. If desired, broil at 450 for just about 1 minute to brown the top a little more. Watch it carefully/, don’t walk away.
Optional: Garnish with fresh parsley and grated Parmesan cheese. Remove and serve!