Roasted Tomato Sauce

I live in New Jersey, aka The Garden State, and we have some of the most delicious summer produce.  Despite all the jokes about my home state, we have the best tomatoes in the country.  So I frequent our local farmers' markets here, where the produce is so fresh and the price is right!  I got two beautiful pints of red grape tomatoes for $3, and combined them with a pint of yellow tomatoes I did purchase at the grocery store to make this delicious sauce.  Roasting the tomatoes gives a complexity you would not otherwise get.  This sauce freezes very well.

2 pints red grape tomatoes, washed and pat dry
1 pint yellow grape tomatoes, washed and pat dry
1/4 EVOO
salt and pepper to taste
1 tsp basil pesto (I had fresh made, but you can use store bought)
1/2 tsp sugar
few shakes red pepper flakes (optional)
2 cloves fresh garlic, crushed (or 2 tsp garlic paste)
6 large fresh basil leaves (or about 8 if they are smaller)
1/4 cup fat free half and half
1/4 cup parmesan cheese, grated

Preheat oven to 400 degrees.  Toss tomatoes, EVOO, pesto, salt and pepper, sugar, red pepper flakes and garlic.  Place in non stick foil lined 9x13 baking dish.  Roast in oven about 20 minutes or until tomatoes start to "burst," releasing juices.  Pour all contents of dish into medium sized pot, add fresh basil leaves and puree with immersion blender.  Adjust seasonings to taste, add fat free half and half and parm and cook over low until hot.  Serve over pasta.
**I highly recommend the purchase of an immersion blender if you do not have one, at $30 they are one of the most useful cooking instruments and not very costly.  If not, you can puree this sauce in blender or food processor, just stop processor and open lid a few times to let steam escape.