stovetop - one dish turkey/chicken tetrazzini

Ingredients

• - cooking spray
• 1 1/2 cups diced deli, lower-salt turkey breast (about 1/2 pound) or you can sub cooked chicken
• 1/2 cup chopped onion
• 1/4 cup water
• 1 can 10 3/4 oz. can condensed reduced-fat/sodium cream of mushroom soup, undiluted
• 3/4 cup shredded reduced-fat sharp cheddar cheese
• 2 cups hot cooked spaghetti (about 1/4 pound uncooked)
• 2 tablespoons chopped fresh parsley
• 1/8 teaspoon black pepper
• 1 jar 2 oz. jar pimento
• - parsley sprigs (optional)