Preheat proofing oven to 200 degreed F. Then turn off oven. Gather your baking sheet and place parchment paper on it.
In Bosch mixer with cookie paddles, add the 11 1/2 oz of Emma's flour blend, 1 1/2 oz of sorghum flour, xanthan gum, sugar, saf yeast, and sea salt. Pulse a few times to blend well.
In a microwave safe glass measuring cup, measure 1 1/8 C water. Add the two TBSP butter, and microwave for about 40 seconds on High. Stir the water a little bit to help the butter mostly melt. It's okay if it isn't completely melted.
Add apple cider vinegar to the measuring glass. Pour into Mixer. Add egg to mixer.
Mix on speed one until fully combined. You may need to pause and scrap down the sides at least once. Then keep on speed one for 2 minutes.
Remove the paddles and scrape out the dough onto a heavily floured parchment paper. Add more all purpose gf flour blend on top. Gently knead the dough for a couple of turns of the dough, adding just enough flour so that it will be able to roll.(I wish this was an exact science, but just add enough so that it's not sticking to your hands as you gently knead it).
Once the dough is ready to be rolled, use a rolling pin that is coated in the flour too, to roll our the dough into a rectangle. It will be about 9 x12 inches( I didn't measure). You don't want to roll it too thin, it should be about 1/2-3/4 inch or so thick.
Using a pizza slicer, cut out breadstick rectangles.
Carefully place breadsticks onto your prepared baking sheet.
Melt butter and using a pastry brush, gently brush butter onto each breadstick. Sprinkle sea salt on top. Then sprinkle generously some garlic powder. And finally lightly sprinkle dried parsley flakes on top.
Cover with greased plastic wrap and place in proofing oven for 5 minutes. Remove plastic wrap before baking!
If you have the luxury of having a second oven, I preheat mine while rolling out my dough. If not, then wait until your breadsticks are done proofing, then turn on your oven to 375 degrees F.
Remove plastic wrap and place in preheated oven to bake for 20-22 minutes or until breadsticks are lightly browned.
Serve warm. Store in an airtight container after fully cooled for 1-2 days.