4 Cheese Pepperoni Pizzadilla

Name: 4 Cheese Pepperoni Pizzadilla
Ingredients: 1 tablespoon salted butter; 1 tablespoon olive oil; Two 10-inch flour tortillas; One 14-ounce jar pizza sauce; 3/4 cup shredded provolone; 3/4 cup shredded fontina cheese; 1 1/4 cups shredded mozzarella; 2 tablespoons grated Parmesan; 1 teaspoon dried oregano; 1/4 red bell pepper, seeded, halved crosswise and cut into very thin strips; 1/4 small red onion, sliced into very thin half-moons; 15 pepperoni slices; 2 tablespoons Kalamata olives, pitted and halved; 1/8 cup torn fresh basil leaves