Beefy Pizza Roll-Up

Ingredients

• 1 pound ground beef
• 1/2 cup chopped onion
• 1 pound prepared pizza dough
• 12 slices pepperoni, thinly sliced
• 1/2 (8 ounce) package shredded Cheddar cheese
• 1 (4 ounce) ball shredded mozzarella cheese
• 1 tablespoon olive oil, or as needed
• 2 tablespoons grated Parmesan cheese, or to taste
• 1/4 teaspoon sea salt, or to taste
• 1 (8 ounce) can pizza sauce, or as needed