Preheat oven to 350. Line a large cookie sheet with parchment paper.
Combine the butter, almond flour, ⅓ cup of the sweetener, coconut flour, gelatin, vanilla, and salt in a food processor. Pulse until wet crumbs form. Add the peanuts. Pulse until the nuts are chopped.
Divide the dough into 18 pieces. Put the remaining ⅓ cup sweetener in a shallow bowl. Roll each piece of dough into a ball. Put the dough in the sweetener and press it into a disc. Flip it over and press again so both sides are dusted with sweetener. Put on the prepared baking sheet. Repeat.
Bake for 17-19 minutes or until the edges are golden. Cool completely. These will firm up more when refrigerated.