Combine the dry ingredients of the gluten free bread flour, baking powder and salt in a large bowl or the bowl of your stand mixer. 350 grams King Arthur Gluten Free Bread Flour Blend 10 grams baking powder 10 grams sea salt
Add the bloomed yeast water to the stand mixing bowl.
Turn on stand mixer, fitted with dough hook and mix for 1 minute.
Add the extra virgin olive oil and apple cider vinegar to the dough. 23 grams extra virgin olive oil 3 grams apple cider vinegar
Mix the dough for 3-5 minutes to fully hydrate the gluten free flour blend.
While the dough mixes, prepare your baking dish.
Press the parchment paper into the shape and size of your skillet or baking dish.
Shape the dough by gently placing the gluten free focaccia bread dough into the pre-shaped parchment paper and cold skillet.
Gently press down with your hands to push the gluten free dough to fit the shape of the skillet or baking pan. See photos.
Remove the Dough: Once you have pushed and stretched the dough to fit the entire skillet or pan, carefully slide out the parchment paper and gluten free focaccia dough onto the counter.
Cover the dough with a tea towel and let sit in a warm area for 30 minutes.
After 30 minutes, place the cast iron skill into the oven and turn it on to 400 degrees F. (If using a glass or metal baking pan, see notes.)
Gently, dimple the dough by pushing down with your fingertips just till the dough gives shape. Do not push down fully like you would with a traditional focaccia bread dough.
Prepare for Baking: Carefully remove the hot skillet from the oven onto a hot pad, pick up the parchment paper and focaccia dough, and place it back into the skillet or prepared pan.
Add Toppings: Drizzle the top of the dough with extra virgin olive oil and sprinkle with your choice of toppings.23 grams extra virgin olive oil 3 grams Italian seasonings blend 4 grams garlic powder 8 grams sea salt
Place the skillet into the hot oven and bake for 25-30 minutes, or until the internal temperature reads 210 degrees F with a digital thermometer.