Tuna Alla Puttanesca

2 cans tuna drained and flaked
2 cups dry bow tie pasta
4 tablespoons olive oil
3 garlic cloves
1 small red onion, chopped
1 can (14oz) diced tomatoes in juice
1 cup white cooking wine
3 tablespoon capers. drained
1 tablespoon chopped Rosemary
1 teaspoon ground black pepper
salt to taste
2 tablespoon Italian parsley
freshly grated Parmesan cheese

Prepare pasta meanwhile place oil in large skillet over medium heat. Add garlic and onions and saute for 5 minutes. Add tomatoes and juice, wine, capers, rosemary and pepper to onions and garlic. Raise heat to high heat and cook for 3-4 min or until the sauce thickens slightly. Salt to taste. Add tuna and pasta to sauce,stir to combine. Stir in parsley. Spoon onto plates and garnish each serving with cheese.  Serves 6.