If you're one of the lucky few who's got an abundance of tomatoes coming from your garden, you may consider making gazpacho - a chilled Spanish tomato soup. I found this on a quick search after coming upon 3 delicious, overripe yellow tomatoes, which I found slightly less bitter than red tomatoes. However, I later made this recipe exactly the same way with normal tomatoes, and it came out just fine. I have since made this dish a number of times with yellow tomatoes, which seem to have slightly less acidic flavor, and which really make for an impressive dish.
This dish travels incredibly well - I have served it out of a tupperware pitcher into disposable cups at least twice in my life, most notably when I was about ten, but more recently a couple of weeks ago. It confused everyone the first time, but both times it was delicious.