Preheat oven to 375°F.

Coarsely mash avocados with lemon juice, garlic, red onion, jalapeño, salt and cilantro, if using.

Arrange bacon on a slotted broiler pan or a wire rack inserted in baking sheet. Bake to crisp, 15-18 minutes.

Preheat a cast-iron skillet over medium to medium-high heat. In a bowl, combine turkey with Worcestershire, salt and pepper then form 4 large, thin patties. Add oil to pan, 1 turn, then wipe pan with a paper towel to coat it in an even layer. Add patties and cook about 10 minutes, turning halfway, until cooked through. Top each patty with 2 slices of cheese in the last minute of cooking time.

Pile some guacamole on toast, top with a cheeseburger, 3 slices of bacon, some lettuce, tomato and another sliced of toast. Cut in half and serve.