French Bread Pizza Loaded with Sausage and Peppers

Ingredients

• 1 large French bread loaf, about 16 oz (450 g)
• 3 tablespoons unsalted butter, melted
• 2 cloves garlic, finely minced
• 1/4 teaspoon dried oregano
• 1/2 lb (225 g) mild or hot Italian sausage, casings removed
• 3/4 cup (180 ml) thick pizza sauce
• 2 cups (225 g) shredded low-moisture mozzarella, divided
• 3 oz (85 g) sliced pepperoni
• 1/2 cup (70 g) thinly sliced green bell pepper
• 1/3 cup (45 g) thinly sliced red onion
• 1/2 cup (45 g) sliced mushrooms
• 1/4 cup (35 g) sliced black olives
• 1/4 cup (25 g) grated parmesan cheese
• Crushed red pepper flakes, optional
• Fresh basil leaves, for serving