To make the bread bowls: cut a circle into the top of each roll, then remove the bread from inside the circle, using your fingers to hollow out the inside of the roll. You should have four individual “bread bowls,” with the bottoms still intact.
Stuff each bread bowl with equal amounts lettuce, tomatoes, blue cheese, egg, avocado, and bacon.
Drizzle with balsamic glaze and/or your favorite salad dressing. Serve.