Preheat oven to 350 degrees F. Combine almond flour, baking mix, baking powder, and salt together. In mixer bowl, cream butter and preferred sweetener for 2 minutes. Add vanilla and egg. Mix well. Add almond flour mixture and mix for 3 minutes. Shape dough into balls and flatten to ½ in thick. Press an indentation in the center. Combine filling ingredients. Fill indentation with walnut filling, mounding slightly. Bake for 6-8 minutes or until very lightly browned. Store in refrigerator. 30 cookies.