Preheat oven to 350 degrees. Prepare a baking sheet with parchment paper and set aside.
In a large mixing bowl, combine cashew butter, almond flour, baking powder, egg, flaxseed, Truvia, vanilla, and salt. Using a hand mixer on low, mix ingredients until dough starts to form.
Using a 2T-sized cookie scoop, place batter 1-2 inches apart onto the prepared baking sheet. If a cookie scoop is unavailable, use a measuring spoon and roll the mixture into a ball.
Using the back of a fork, press over the top of the cookie to flatten a create a criss-cross pattern. Place in the oven and bake for 9-11 minutes, or until the edges are crispy. Do not over cook!
Allow to cool for 5 minutes; transfer to a wire rack.