Mix up a batch of same-day focaccia dough.
Tip the dough into a half sheet pan (18x13 inches) that's been prepared with nonstick parchment and extra virgin olive oil.
Cover with oiled parchment paper to proof for 1-1.5 hours.
Make your pizza sauce while it's proofing.
Preheat oven to 220C/430F and place oven rack in lowest position.
Spread the dough to the edges of tray, drizzle with extra virgin olive oil and dimple whilst pushing towards the edges so the dough is in one even layer covering the entire tray.
Par bake for 10-12 minutes or until the bread is starting to get a few golden spots on top.
Remove from oven, spread over sauce, plenty of cheese and any other toppings of choice.
Bake for another 10-12 minutes or so, or until the cheese is golden and bubbly and the base is crisp.
Add on any fresh toppings like basil, Parmesan, prosciutto, arugula etc once it's out of the oven.
Cut into squares and enjoy!
For make ahead, par-bake the focaccia base, remove from tray and place on cooling rack. When you're ready to pick back up where you left off, heat the oven up again, place the base back into the tray, add on the sauce, cheese and toppings and return to the oven to finish baking.
