Place all the ingredients in a deep stainless steel pan or casserole. Place in a low oven at 200 for 6 hours until the tomatoes are soft and very fragrant.
The tomatoes can be used in sauces, salads, and vinaigrettes. The soft and delicious garlic can be mashed and added to vinaigrettes and sauces. Save the olive oil and sauté with it, make vinaigrettes with it or confit more tomatoes.