Ratatouille

http://smittenkitchen.com/blog/2007/07/rat-a-too-ee-for-you-ee/

1/2 onion, finely chopped
2 garlic cloves, very thinly sliced
1 cup tomato puree (such as Pomi)
2 tablespoons olive oil, divided
1 small eggplant (my store sells these “Italian Eggplant” that are less than half the size of regular ones; it worked perfectly)
1 smallish zucchini
1 smallish yellow squash
1 longish red bell pepper
Few sprigs fresh thyme
Salt and pepper