sausage and pepper recipe

Ingredients: 1 pound (450g) Italian sausage (mild or spicy, your choice) 3 bell peppers (assorted colors), sliced into strips 1 large onion, sliced 2 cloves garlic, minced 2 tablespoons olive oil 1 can (14.5 ounces) diced tomatoes (optional) 1 teaspoon dried oregano 1 teaspoon dried basil Salt and pepper to taste Fresh parsley, chopped (for garnish)