In the bowl of a stand mixer fitted with a dough hook, combine warm water and honey. Sprinkle with yeast. Let sit for 5 minutes, until yeast is foamy (see notes if your yeast is not foaming).
Add flour and salt and mix until no dry spots remain.
Brush to coat a large bowl with 2 Tablespoons olive oil. Transfer the dough to the bowl and turn to coat. Cover with lightly greased plastic wrap and let rise until doubled in size, 2-3 hours.
Brush a 13x9 inch pan with 2-3 Tablespoons olive oil and set aside.
After the first rise, use a spatula to scrape around the outside of the bowl and turn the dough over on itself a few times. This will deflate the dough (don't overdo it! 2-3 turns is enough). Transfer the dough to the prepared pan and cover with a clean, dry dish towel. Let rise for 1 ½-2 hours until the dough has completely filled (or very nearly) the entire pan.
Preheat the oven to 450°F. Lightly oil your hands and press the dough to completely fill the pan, if it hasn't already. Use your fingers to press dimples into the dough all over.
Drizzle the dough with 2 Tablespoons olive oil, then spread the sliced shallots and rosemary sprigs across the dough. You can lightly press them into the dough, but you don't have to. Sprinkle with flaky sea salt.
Bake 25-35 minutes or until the focaccia is puffed, golden and crusty. Remove from the oven and drizzle with an additional 1-2 Tablespoons olive oil. Let cool in the pan for 10 minutes, then transfer to a cooling rack to cool fully. Slice before serving.
Keyword bread, focaccia, rosemary, shallots
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