Preheat oven 500degrees. Stretch or roll pizza dough to a 12" round. Place on a pan dusted with flour or cornmeal.
Shave asparagus with a vegetable peeler and place shaving in medium bowl (do not snap off the tough ends - those are your handles for shaving). Toss shavings with olive oil, salt, pepper and red pepper flake.
Top dough with parmesan and then mozzarella. Next add onion and then pile asparagus on top. Bake in oven for 10 to 15 minutes or until crust is golden and cheese begins to brown.
Immediately after pulling out of oven squeeze fresh lemon juice on top. Slice and devour!
Recipe by pretty plain janes at https://prettyplainjanes.com/2015/03/26/shaved-asparagus-pizza/