Last night we made a tomato tart. We started with a whole wheat crust, prebaked. Smeared a bit of olive oil and about 4oz of Lively Run goat cheese across the bottom and then put a layer of caramelized onion followed by a layer of thinly sliced heirloom tomatoes that had been tossed with salt, pepper and fresh oregano. That went in the oven for 20 minutes or so and came out heavenly.
The combination of caramelized onions, goat cheese and tomato are an amazing combination, almost on the level of a *holy trinity (all though I'm not sure it could really count because it wouldn't work as a versatile flavour base which I think is a major criteria of a holy trinity).
*holy trinities: ginger, garlic, chilies; celery, carrots, onions; garlic, onions, olive oil; etc. - I'm sure everyone has their favourites.