Preheat oven according to package directions for flatbread or pizza crust.
Spread cheese evenly over crust, topped by cooked ground beef and bacon.
Cook according to package directions.
While still hot, top with tomatoes, lettuce and red onion (or other desired condiments and toppings). Finish with mayonnaise! To get the fun swirl or to make your own design, put mayo in an airtight plastic bag and snip the corner, resulting in a makeshift piping bag.