1 tablespoon olive oil ½ medium onion, cut into chunks ½ cup diced yellow squash ½ cup diced zucchini Salt and freshly ground black pepper 1 tomato, sliced thickly 1 teaspoon vinegar 2 eggs 1 slice cheese ( Monterey Jack, Cheddar, Swiss, etc.)

Read the recipe on Topchefcooking.com