Heat oil, sauté onions & garlic till soft (5 minutes). Add squash & tomatoes (but not juice), cook till squash is quite soft. Add the rest of ingredients. If it needs to be thickened add a bit of flour or cornstarch (2 tablespoons) to hot water (3 tablespoons), then add to mixture. Cook till thick, put in pie crust, bake at 450 till cooked (20 minutes). I also sprinkled some grated cheese on top, but oats or wheat germ would work well too.