Ah, the club sandwich. Is there a better exmple of how meat and vegetables should be placed between pieces of bread? Turkey, bacon, lettuce, and tomato. Some mayo and maybe a side of coleslaw, and you have what has become a quintessential American meal (one that, by some accounts was invented in a Saratoga Springs gambling club in the late 19th century by a line cook named Danny Mears). So how can you improve on something that's already pretty perfect? Add avocado — slices, and also as a spread. That's right, smashing some avocado and mxing in a little mayo, salt, and pepper and applying it to each side of the toasted bread adds another dimension to the sandwich.
Check out Everything You Want to Know About Avocados.