Vegetarian Sandwich

Directions

1. 1
   (Soak the onion slices in water for about 1 hour, then drain.)
2. 2
   Toast the bread, coat one side with mayonnaise.
3. 3
   Top one slice of bread with onion, then tomato, then sprinkle with salt and pepper, in that order.
4. 4
   Cover with the other slice of bread, mayo side down, to make a sandwich.
5. 5
   Cut in half and you're all done.