In the meantime, get ready your onions: Warmth a large sauté pan more than medium heat. When incredibly hot, insert 2 tablespoons olive oil. When the oil is heated, include the onions and 1 teaspoon kosher salt. Cook onions, stirring each and every minute or two, right until a medium brown, almost caramel coloured, about 25 minutes. [See Note at end.] Scrape onions onto a plate to cool while you complete 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 top of the dough with a further tablespoon of olive oil and use your fingers to dimple the dough, flattening it out. It is okay if it does not attain the edges. Enable the dimpled dough relaxation at space temperature for 15 minutes and heat your oven to 425°F. Following 15 minutes, dimple the dough only the place desired a very little even more into the corners. Allow rest for a closing 15 minutes in advance of scattering the leading with onions, poppy seeds, and a couple pinches of salt.
Bake the focaccia: For 25 minutes, until deeply golden brown at the edges and throughout the leading. Though it bakes, you can get ready any toppings you’d like to serve it with, this sort of as product cheese or butter, lox, thinly sliced tomatoes, cucumbers, onions, or capers.
To provide: Loosen the focaccia if it is trapped in any location and slide it into a cutting board. Reduce into 12 squares, applying a sharp knife to get as a result of the onions on major without having pulling them off, and changing any that scatter. Try to eat right away.
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.
Be aware: These are not caramelized onions we do not want 60 to 90 minutes about minimal warmth with regular stirring. That is not how any ancestor of mine cooked onions. I’m deliberately making use of a larger warmth for much more promptly developed taste. If they are not buying up coloration by 20 minutes, bump up the heat somewhat. If they are coloring way too speedy to make it to 20 to 25 minutes, cut down the heat. We want to halting shy of a dim bronzed color, as the onions will complete in the oven and we never want them to burn up.