Add your pecans to a food processor and pulse until fine crumbs form.
Next, combine the almond flour and softened butter with the pecan crumbs in the processor. Pulse until the mixture starts to come together.
Slowly add the powdered monk fruit sweetener, vanilla extract, and sea salt. Process until the dough forms a ball. If the dough seems too dry, add almond milk, one teaspoon at a time, until it sticks together.
Remove the dough, wrap it tightly in plastic wrap, and chill in the refrigerator for at least 30 minutes.
While your dough chills, preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper or a silicone mat.
Once chilled, roll the dough into 2-tablespoon sized balls. Place them about 2 inches apart on your prepared baking sheet.
Bake for 13-15 minutes, until the bottoms are just slightly golden. Rotate the pans halfway through for even baking, and be careful not to over-bake to keep them tender.
Remove cookies from the oven and let them cool on the baking pan for about 2 minutes. Meanwhile, sift 1/2 cup of powdered sweetener into a medium bowl. While still warm, gently roll the cookies in the powdered sweetener.
Transfer the coated cookies to a cooling rack. Once completely cool, you can roll them in powdered sweetener again for an extra layer, if desired.
Store these delightful cookies in an airtight container for up to 3 days or freeze them for up to one month.