Note
1: Preheat your oven, aiming for around 650 °F (345 °C) on your baking stone.
You can check this quickly, accurately and from a safe distance with an infrared thermometer.
2: Slice the yellow onion into ¼ to ½-inch (½ to 1 ¼-centimeter) thick rings, and lay them flat on a baking tray.
Drizzle the slices with olive oil and add the salt. Roast the onion in your oven for 5 to 8 minutes, stirring occasionally with tongs until caramelized and golden brown. Wearing oven gloves, remove the pan from the oven and set aside.

3: Increase the heat of your oven, aiming for 850 °F (450 °C) on the baking stone.
You can check this quickly, accurately and from a safe distance with an infrared thermometer.
4: Place a dough ball on your lightly-floured work surface.
Push the air from the center out to the edge with your fingers. Stretch the dough out to a 12-inch (30-centimeter) round base, and then keep your dough on the countertop, or lay the stretched dough over your lightly floured pizza peel.
5: Top with ¼ of the crème fraîche, using a spoon to spread evenly over the crust.
Then top with ½ cup (60 grams) of mozzarella, ¼ cup (25 grams) of gouda, ¼ of the roasted onions, ¼ of the ham and ¼ of the roasted pineapple.

6: Launch your pizza into the oven.
Cook your pizza for 60 to 90 seconds, turning every 20 seconds or so with a turning peel to ensure an even cook.
7: Remove from the oven.
Slice, serve and enjoy! Repeat the steps for the remaining pizzas.