Spicy Pesto and Cheese Stuffed Zucchini Involtini

Bahan-bahan (6 porsi)

• 2 tablespoons extra virgin olive oil
• 1/2 pound ground spicy Italian chicken sausage
• 1 red bell pepper, chopped
• 1 can (14 ounce) crushed San Marzano tomatoes ((or 2 cups tomato sauce))
• 1 tablespoon chopped fresh oregano ((or 2 teaspoons dried))
• 1 tablespoon fresh thyme leaves ((or 2 teaspoons dried))
• 1 pinch crushed red pepper flakes
• kosher salt and black pepper
• 2 large zucchini or yellow summer squash
• 1 1/2 cups whole milk ricotta cheese
• 1 cup shredded fontina cheese
• 3/4 cup basil pesto, homemade or store-bought
• 4 ounces mozzarella, torn
• fresh basil, for serving