I always have a batch of these in the refrigerator for my son who has a gluten sensitivity. It is one of the only gluten free cookies he likes. The baking mix already contains salt and leavening, so there is no need to add it.
Mix well, form into a ball and then a "log" (about 1 foot long) on a parchment paper lined baking sheet that has been sprayed lightly with cooking spray.
Bake @350 degrees for 20 minutes.
Remove from oven and let sit for 10 minutes.
Lower oven to 300 degrees.
Slice log into cookie slices and return to oven for 30 minutes.