Preheat oven to 350 degrees F / 177 degrees C.
Combine 2½ cup almond flour, ½ cup erythritol, 2 teaspoons ginger, ½ teaspoons cinnamon, ½ teaspoons nutmeg, and ¼ teaspoons salt in medium bowl until well combined. Set aside.
½ cup erythritol
In separate bowl, cream together butter, allulose, and water until smooth. Mix in egg, blending thoroughly until fully incorporated.
Whisk baking soda and molasses into butter mixture.
Slowly incorporate almond flour mixture into wet ingredients until dough is smooth. Chill cookie dough for an hour in refrigerator.
Place parchment paper on baking sheet. Roll chilled dough into 15 equal-sized balls and flatten slightly onto prepared baking sheet, leaving space between each cookie.
Bake for 10 to 12 minutes or until edges are golden brown.
Cool cookies on cooling rack before serving.