Add the sponge to your mixer bowl and attach the dough hook.
Add dough ingredients and mix on low for 1-2 minutes.
Bump speed up and knead for 5-7 minutes or until dough is pulling away from the sides of the bowl.
Your dough should be shiny, smooth, and very sticky.
Transfer your dough to a container with an air tight lid using a silicone scraper. Cover and let rest for 1 hour. Wet your hands, and complete a round of stretch and folds.
Cover and let rest for 30 minutes.
Complete 2 more rounds of stretch and folds (for a total of 3 rounds) with a 30 minute rest after each one.
After the last rest, liberally flour your working surface and turn out your dough.
With well floured hands, press your dough into a rectangle.
Using a dough cutter, cut your dough in half length wise. Cut each half into 4 sections. You can reshape your sections into more of a rectangle shape if you choose.
Sprinkle the top of the dough with flour, cover with a tea towel, and let proof for 2 hours.
An hour before baking, set you oven to 450 degrees and preheat a cookie sheet.
Gently transfer your dough to some parchment paper using the silicone scraper. Carefully transfer the parchment paper onto the preheated cookie sheet.
Bake for 25-30 minutes or until golden brown.
Let cool for 20-30 minutes.
Enjoy!