Bev's Spaghetti Sauce

INGREDIENTS

• 1 1/2 lbs ground beef
• 2 tablespoons olive oil
• 1 medium onion, chopped
• 2 cloves garlic, minced (to taste)
• 2 bay leaves
• 1 teaspoon oregano
• 1 teaspoon dried basil
• 1 teaspoon italian seasoning
• 1 teaspoon salt (, or to taste)
• ground pepper
• 1 (6 ounce) can tomato paste
• 2 (16 ounce) cans tomato sauce
• 1 (28 ounce) can diced tomatoes
• 8 ounces fresh mushrooms, sliced and sauteed in butter (optional)
• parmesan cheese, freshly grated (optional)