Steep garlic in olive oil at least 1/2 hour. Preheat oven to 400 degrees. Wash and stem tomatoes and cut them in half (put unwrapped bread into the oven). Put tomatoes in a shallow baking dish, pour olive oil and garlic over and toss lightly. Bake 10 minutes; sprinkle over chunks of cheese (cut into 1/2 inch pieces) and slivered basil. Stir gently. Serve with bread to mop up juices.