I used this recipe

Essentially, 2 c wheat flour, 1 c rolled oats, 1/3-1/2 c peanut butter, and 1 and 1/4 cups hot water. Roll out, use spiffy cookie cutters if you want, bake at 350 for 40 minutes and let sit out to cool overnight.

I really only wanted to decorate b/c I like to do that sort of thing but leaving them plain is probably the best plan. I just bought cute little snowman ziplocs for them instead.