Place a pizza stone
on the floor or the lowest rack of your oven. Preheat the oven to 500 degrees F.
Pat the pizza dough into a 12-inch diameter circle and place it on a peel
. Spread on the heavy cream
, then the mozzarella. Place the ham
slices on evenly and scatter the onions
over the top. Sprinkle the lemon juice over everything. Slide onto the stone and bake for 8 to 10 minutes. Cover the pizza with the baby arugula
and grind on some black pepper.