Turkey Tetrazzini Recipe

Ingredients

• 1 package (16 ounces) spaghetti
• 2 medium onions, chopped
• 9 tablespoons butter, divided
• 1 pound sliced fresh mushrooms
• 1 large sweet red pepper, chopped
• 1/2 cup all-purpose flour
• 1 teaspoon salt
• 6 cups 2% milk
• 1 tablespoon chicken bouillon granules
• 6 cups cubed cooked turkey breast
• 1 cup grated Parmesan cheese
• 1-1/2 cups dry bread crumbs
• 4 teaspoons minced fresh parsley