Italian Drunken Noodles with Sausage and Bell Peppers

Ingredients

• 12 oz (340 g) pappardelle or other wide pasta
• 1 tablespoon kosher salt, for the pasta water
• 1 cup reserved pasta water
• 2 tablespoons olive oil, divided
• 1 lb (450 g) hot or sweet Italian sausage, casings removed
• 1 medium yellow onion, thinly sliced
• 1 red bell pepper, thinly sliced
• 1 yellow bell pepper, thinly sliced
• 1 orange bell pepper, thinly sliced
• 4 cloves garlic, minced
• 1 teaspoon Italian seasoning
• 1/2 teaspoon black pepper
• 1/4 teaspoon red pepper flakes, optional
• 1/2 cup (120 ml) dry white wine
• 1 can (14.5 oz / 411 g) diced tomatoes with juices
• 2 tablespoons tomato paste
• 1/3 cup chopped fresh basil, plus more for serving
• 2 tablespoons chopped fresh parsley
• Salt, to taste