Preheat oven to 350 degrees F (175 degrees C). Line a baking sheet with parchment paper.
Combine almond flour, butter, egg, sweetener, vanilla extract, and cinnamon in a bowl; mix until well combined.
Roll dough into 1-inch balls. Place on the prepared baking sheet and press down with a fork twice in a criss-cross pattern.
Bake in the the preheated oven until edges are golden, 12 to 15 minutes. Cool on the baking sheet for 1 minute before removing to a wire rack to cool completely.
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