Supreme Ravioli Pizza Bake

Name: Supreme Ravioli Pizza Bake
Ingredients: Kosher salt; 3 tablespoons extra-virgin olive oil, plus more for brushing; 1 3/4 cups grated Parmesan; 2 pounds large square cheese ravioli; 2 large eggs, beaten; 1 1/2 cups pizza sauce; 2 cups grated low-moisture mozzarella; 1 cup cooked, crumbled Italian sausage; 3/4 cup sliced pepperoni; 1 red bell pepper, diced; 8 white button mushrooms, thinly sliced; 1/4 red onion, thinly sliced; 2 ounces sliced deli ham, chopped; 1 cup fresh basil, shredded