1 Tbsp olive oil
2 tsp minced garlic
3 small onions, sliced
1 tsp salt
1/2 tsp freshly-ground pepper
1 Tbsp each fresh thyme, oregano and basil (or 1 tsp each, dried)
1 medium zucchini, washed, cut into thin slices (about 1/2 pound)
1 medium yellow squash, washed, cut into thin slices (about 1/2 pound)
6 fresh plum tomatoes, cut into medium slices