I love potatoes -- all types. And, I sorta miss having scalloped potatoes since we've become mostly a GFCF household. Being soy-free also doesn't make subbing dairy any easier. I've tried to develop scalloped potato recipes a few times but failed. Getting the right flavor and texture is vital to this recipe. Finally, I've come up with a recipe that's pretty darn good. It's something I can live with. And, my kids like it too. I did this in the crock pot, but I'm sure you can adapt to the oven.
Potatoes, peeled and thinly sliced
Dairy free margarine or ghee -- I used Spectrum shortening
GF tapioca flour (I think potato starch, corn starch would work too)
GF chickpea flour (I think potato flour, rice flour, etc. would work too -- anything that's a fine flour and not grainy)
Dairy free milk -- I used Vance's DariFree.
Corn starch (I think tapioca or potato starch would work too)
I use a big crock pot, so adapt if yours is smaller. But, I started by peeling and slicing the potatoes. I did two average sized potatoes at a time. Then I layered the slices of those two potatoes on the bottom of the crok pot.
Then, I sprinkled a dash of salt and a pinch of pepper over top of the layer.
I then sprinkled 1 tbsp of the tapioca flour over the layer and then 1 tbsp of the chickpea flour over the layer.
Then, I plopped about 4 small dabs of the shortening (or margarine) in various places over the layer -- they were about 1/2 tsp each.
Then, I repeated this process by adding another layer of potatoes over top -- about two potatoes. Then, the seasoning, flours and shortening.
I did this with about 4-5 layers of potatoes.
When done, I poured 1 cup of DariFree milk over top and then 1 cup of water over top.
I turned the crock pot setting to high and let it go for four hours.
After 2 hours, I turned over the top layer of potatoes to ensure they didn't dry out. I did this again after the 3rd hour.
After the 3rd hour, I test tasted. I found that the DariFree taste was coming thru too much and not enough of the seasoning I had put in. So, I added another dose of salt and pepper and a couple dashes of garlic powder. You can skip this if you don't like garlic. It was enough to flavor but not overwhelm.
That's it. Enjoy.