• In the bowl of a stand mixer, combine the flour, yeast, kosher salt, honey, and warm water, being sure to test the water temp with your Thermapen ONE. It should be between 100 and 105°F (38 and 41°C).
• Mix the ingredients to a shaggy, wet dough. It will seem too loose, but don’t worry about it!
• Pour 4 tbsp of the olive oil into a large bowl.
• Pour/scrape the dough into the bowl with the oil and turn it over to coat. Cover with plastic wrap and place in the refrigerator overnight. 

The next day (or 3–4 hours later, if you’re in a rush)…

• Use 1 Tbsp of the butter to well-grease a 9×13″ pan. Add 2 Tbsp of oil to the pan as well.
• Remove the dough from the fridge and uncover it. 
• Set the bowl on the counter and use two forks to lift up the far edge of the dough in the bowl, folding it towards yourself. Turn the bowl 90° and repeat, lifting the far edge and pulling it towards you. Repeat until you’ve completed a fold on all four sides. 

• flop the dough and all the oil in its bowl into the prepared pan. 
• Let the dough rise, uncovered, at 85°F (29°C) until doubled in size, nice and loose, and somewhat bubbly. 
  • Meanwhile, preheat your oven to 450°F (232°C).
• Dimple the dough all over with your fingers, sprinkle with flaky sea salt, drizzle on the rest of the olive oil, and sprinkle with the leaves from one of the sprigs of rosemary. 
• Put the pan in the oven and bake for 20–30 minutes, until the top is a lovely golden and the internal temperature is 190-210°F (88–99°C).
• When your timer sounds, verify the internal temperature with your Thermapen ONE. Continue to cook if the temp is not high enough. 
• Remove the pan from the oven. 
• Before serving, heat the remaining butter in a small pan with the remaining sprig of rosemary. Infuse the herb until the butter is very fragrant, then discard the sprig and use a silicone brush to brush the butter onto the surface of the bread. 
• Cut and serve (perhaps filled with ham, mortadella, prosciutto, arugula, roasted pepper strips, fresh mozz, pesto, and spicy mayo).