6 tbsp olive oil

1 med onion, thinly sliced

3 whole Garlic cloves, crushed

3 cups finely cut peeled and seeded ripe tomatoes or 1 33-ounce tin Italian plum tomatoes

2 tbsp fresh basil or 1-1/2 tsp dry basil

1 tsp salt or to taste

1 tsp freshly ground pepper

1 tsp sugar

1/2 cup tomato paste

1/4 cup grated fresh Parmesan cheese