Meanwhile, get ready your onions: Heat a large sauté pan in excess of medium heat. Once hot, include 2 tablespoons olive oil. Once the oil is heated, insert the onions and 1 teaspoon kosher salt. Cook dinner onions, stirring each and every moment or two, until eventually a medium brown, just about caramel coloured, about 25 minutes. [See Note at end.] Scrape onions onto a plate to amazing while you end the bread.
End 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 prime of the dough with another tablespoon of olive oil and use your fingers to dimple the dough, flattening it out. It is okay if it does not achieve the edges. Enable the dimpled dough relaxation at home temperature for 15 minutes and warmth your oven to 425°F. Soon after 15 minutes, dimple the dough only wherever required a minimal even more into the corners. Allow rest for a ultimate 15 minutes just before scattering the major with onions, poppy seeds, and a number of pinches of salt.
Bake the focaccia: For 25 minutes, until finally deeply golden brown at the edges and across the top rated. Even though it bakes, you can prepare any toppings you’d like to provide it with, this kind of as product cheese or butter, lox, thinly sliced tomatoes, cucumbers, onions, or capers.
To serve: Loosen the focaccia if it’s trapped in any spot and slide it into a reducing board. Minimize into 12 squares, using a sharp knife to get by the onions on top with no pulling them off, and changing any that scatter. Eat proper absent.
Do in advance: Focaccia retains at area temperature for 1 to 2 times. Reheat on a baking sheet at 350°F for 10 to 12 minutes.
Take note: These are not caramelized onions we do not want 60 to 90 minutes more than minimal heat with regular stirring. That is not how any ancestor of mine cooked onions. I’m intentionally applying a better warmth for extra swiftly made taste. If they’re not buying up shade by 20 minutes, bump up the warmth marginally. If they are coloring too speedy to make it to 20 to 25 minutes, lessen the warmth. We want to stopping shy of a dark bronzed colour, as the onions will finish in the oven and we never want them to melt away.