Meanwhile, get ready your onions: Warmth a large sauté pan around medium warmth. At the time very hot, insert 2 tablespoons olive oil. As soon as the oil is heated, insert the onions and 1 teaspoon kosher salt. Cook onions, stirring every moment or two, until eventually a medium brown, almost caramel colored, about 25 minutes. [See Note at end.] Scrape onions onto a plate to cool even though you finish the bread.
Complete the focaccia: When the dough is doubled, pour 2 tablespoons olive oil into a 9×13 cake pan. Do not deflate your dough, just scrape it into the oiled pan. Drizzle the leading of the dough with a further tablespoon of olive oil and use your fingers to dimple the dough, flattening it out. It is ok if it doesn’t achieve the edges. Permit the dimpled dough rest at area temperature for 15 minutes and heat your oven to 425°F. Soon after 15 minutes, dimple the dough only exactly where essential a tiny even further into the corners. Enable relaxation for a ultimate 15 minutes in advance of scattering the top rated with onions, poppy seeds, and a handful of pinches of salt.
Bake the focaccia: For 25 minutes, right until deeply golden brown at the edges and throughout the prime. Though it bakes, you can put together any toppings you’d like to provide it with, this sort of as cream cheese or butter, lox, thinly sliced tomatoes, cucumbers, onions, or capers.
To serve: Loosen the focaccia if it’s trapped in any put and slide it into a reducing board. Slash into 12 squares, utilizing a sharp knife to get by the onions on top with no pulling them off, and changing any that scatter. Try to eat correct away.
Do forward: Focaccia keeps at room temperature for 1 to 2 days. Reheat on a baking sheet at 350°F for 10 to 12 minutes.
Be aware: These are not caramelized onions we do not want 60 to 90 minutes around low heat with consistent stirring. That is not how any ancestor of mine cooked onions. I’m intentionally applying a bigger heat for much more promptly formulated taste. If they’re not choosing up coloration by 20 minutes, bump up the heat marginally. If they’re coloring as well fast to make it to 20 to 25 minutes, decrease the heat. We want to stopping shy of a dim bronzed color, as the onions will finish in the oven and we never want them to burn.