Preheat oven to 350 degrees. Cook bacon in a skillet until done and drain on a paper towel.

In a skillet, brown the beef and onion until done. Drain. Add salt and pepper to taste. Remove from heat. Stir in the Worchestershire, ketchup, and mayonnaise.

Place the mini soft flour tortillas on a baking sheet. Divide meat mixture evenly into the boats and sprinkle with the cheese.

Bake for just a couple minutes or until cheese melts.

Remove from oven and top with crumbled bacon, lettuce, tomato, and mustard (or whatever toppings you like).