I made my first loaf keto following this recipe:
https://ketodietapp.com/Blog/lchf/sourdough-keto-baguette.
Instead of making multiple small baguettes, I made one large loaf. It took much longer to bake and at some point I pulled it out of the bread pan, covered it in butter, and then put it back in the oven to bake for another long stretch of time until it no longer squished around like a
water bed.
My second loaf was my gluten-free sourdough using my adapted polydough recipe (link here:
https://permies.com/p/1865383). I like to add garlic, herbs, and nutritional yeast for a yummy garlic bread with an addicting flavor. It works best if you bake it covered - I have a nice stoneware bread baker. After it's pretty much baked I'll take the lid off and brush it with butter (vegan butter also works), salt, and nutritional yeast and then bake a bit more to get a nice brown top. It's only good fresh so once it gets old it will get dry and not as yummy but then it's perfect for stuffing! I'll make a loaf of this and cube up the leftovers and keep in the freezer. Also makes amazing bread crumbs, which you can also keep in the freezer.
I baked both in the oven. The gluten-free "dough" was left out on the counter for a couple of days to ferment.