Cook spaghetti according to package directions, but omit salt and oil; drain.

In a large non-stick skillet, heat olive oil over medium heat. Cook sliced onion, minced garlic cloves and 1/2-teaspoon red pepper flakes for five mniutes or until softened. Add one chopped tomatoes and cook five more minutes.

Gradually add chopped fresh spinach. Cook five minutes or until spinach is tender. Add drained and flaked albacore tuna. Season with salt and pepper to taste.

Toss mixture with spaghetti and serve with freshly grated Parmesan cheese, if desired.

Serving Suggestions: Serve with a green salad and garlic bread. Serve pineapple sherbet for dessert.