Actually very tasty grain-free cookies

I had lunch with a friend the other day and she mentioned that she'd started making vegetable cookies for her kids.  I think my response was along the lines of "And they eat them?" but when she described them I realized that they were actually a really good idea - largely sweet potato, with some non-grain starch, a small amount of sweetener, spices, and a binder.  I had some sweet potatoes lurking in my cupboard so I gave it a whirl.  (This friend is somewhat like me - "There's no recipe, it's more of a method...")

The first batch was... well, let's use the term "experimental" rather than "failure".  My child actually liked them though, so I set about improving them and I think I've hit on a grain-free treat that's worth eating.  (Unlike, for example, the gluten-free hamburger buns that have surfaced at some of the burger bars in town.  Those are vile, and I'd rather skip the bun entirely or just take the grain bloat for the day.)

Here, then, are cookies that are not terribly unhealthy.  They won't make you thin, and they're probably not super-awesome for you if you're diabetic, but they won't do your kids any harm unless they eat them right before dinner and spoil their appetites.

3 small-med sweet potatoes or yams, cooked, peeled and mashed.  (Bake or microwave, don't steam or boil)
1 3/4 cups almond meal
1/2 cup potato starch
1/3 cup honey (you could use less)
1/2 cup butter
1 large egg
2 tsp pumpkin pie spice (or more if it's been in your cupboard for a while - don't skimp on it)
2 tsp baking powder
1 tsp baking soda
dash vanilla extract
pinch salt

Cream butter & honey together.  Add egg, vanilla, spice and salt and mix thoroughly.  Add almond meal, potato starch and baking powder & soda and mix well.  Add sweet potatoes and mix until combined.  Refrigerate for 20 minutes, then drop in spoonfuls onto baking sheets lined with parchment paper and bake for about 25 minutes at 350F (or until browned a bit and obviously done.)  Makes somewhere between 1 and 2 dozen cookies depending on how big they are.