Step 1: Prepare the Pasta

1. Boil Water: Bring a large pot of salted water to a boil.
2. Cook Pasta: Add pasta and cook according to package instructions until al dente.
3. Drain & Set Aside: Drain the pasta and set aside.

Step 2: Cook the Meat & Sauce

1. Brown the Beef: In a large skillet over medium heat, cook ground beef, diced onion, and diced bell pepper until the beef is browned and vegetables are soft (about 5-7 minutes).
2. Drain Excess Fat: Remove any extra grease from the skillet.
3. Season the Mixture: Stir in pizza sauce, Italian seasoning, salt, and pepper. Let it simmer for a few minutes.

Step 3: Assemble the Casserole

1. Mix Ingredients: In a large mixing bowl, combine the cooked pasta and meat mixture. Stir until well blended.
2. Layer the Casserole:
   • Transfer half of the pasta mixture to a greased 9×13-inch baking dish.
   • Sprinkle with half of the mozzarella cheese and half of the pepperoni slices.
   • Add the remaining pasta mixture on top.
   • Finish by adding the remaining cheese and pepperoni slices on top.

Step 4: Bake

1. Preheat Oven: Set your oven to 350°F (175°C).
2. Bake Covered: Cover the baking dish with foil and bake for 20 minutes.
3. Bake Uncovered: Remove the foil and bake for an additional 10-15 minutes, or until the cheese is bubbly and golden brown.

Step 5: Make the Cheesy Garlic Dressing (Optional but Amazing!)

1. Combine Ingredients: In a small bowl, whisk together mayonnaise, sour cream, garlic powder, onion powder, Italian seasoning, shredded Parmesan, and milk.
2. Adjust Consistency: If needed, add more milk to thin it out.
3. Chill or Serve Immediately: This dressing is perfectly drizzled over your casserole or served as a dipping sauce!

Step 6: Serve & Enjoy!

1. Remove from Oven: Let the casserole cool for a few minutes before serving.
2. Garnish: Sprinkle with grated Parmesan cheese for extra flavor.
3. Drizzle with Cheesy Garlic Dressing for a flavor explosion!