In skillet, cook ground beef with onions over medium heat 8-10 minutes or until
beef is no longer pink; drain.
Add ketchup, mustard and 5 of the cheese slices, cut up; stir until cheese is
melted.
Remove pan from heat.
Unroll crescent dough; separate into 16 triangles. Arrange triangles in a circle
on a round baking stone with points towards the outside. (There should be a 5-inch
diameter opening in the center.) Scoop meat mixture evenly onto widest end of each
triangle.
Top each scoop with pickle slice.
Bring points of triangles up over filling and tuck under wide ends of dough at
center of ring (filling will not be completely covered.)
Bake 20 to 25 minutes or until deep golden brown.
Remove from oven.
Cut each of the remaining 4 cheese slices into 4 triangles.
Arrange cheese triangles over top of ring.
Arrange tomato slices around inside center of ring.
Place lettuce in center of ring.
Serve with additional ketchup and mustard, if desired.