Easy Italian Sausage Spaghetti

Details

Ingredients

• 1 tablespoon olive oil
• 2 pounds sweet Italian sausage
• 1 pound fresh mushrooms, sliced
• 1 onion, chopped
• 1 green bell pepper, chopped
• 1 tablespoon minced garlic
• 2 (28 ounce) cans tomato sauce
• 2 tomatoes, diced
• 1 (6 ounce) can tomato paste
• 1 (6 ounce) can sliced black olives, drained
• 1 teaspoon dried oregano, or to taste
• 1 teaspoon dried basil, or to taste
• salt to taste
• 1 (16 ounce) package spaghetti, or as needed
• ¼ cup grated Parmesan cheese, or to taste