Wash cucumbers, tomatoes and lettuce leaves and dry. Peel the onion and cut into thin slices.
Fry the bacon in a frying pan until golden. Cut the cucumbers and tomatoes into thin slices, cut the cheese into slices.
Spread 2 slices of bread with mayonnaise and place a couple of slices of tomatoes and cucumbers, a lettuce leaf on one, and cheese, onions, and bacon on the other. Place them together and cut them diagonally for beauty.
Serve sandwiches with bacon, tomatoes and cucumbers, securing them with skewers for added effect. Any hot drinks are suitable for sandwiches: tea, coffee or cocoa. You can complement your meal with a salad of fresh or stewed vegetables.