Roll out pizza dough on pizza stone.
Let stand approx. 10-15 minutes. Do not allow dough to rise much. In bowl: Slice apples (as if for a pie). Toss with sugar and cinnamon to coat/taste. Arrange individual slices of apple on entire pizza. Crumble topping over apples.
Bake at 400 degrees for 20 minutes.
This a great appetizer for parties.