Preheat oven to 350°F (177°C). Line a large cookie sheet with parchment paper or a silicone baking mat.
Add almond butter, whisked egg white and maple syrup into a large mixing bowl. Stir with a spatula until maple syrup and egg are completely incorporated into the almond butter and your mixture begins to thicken to a cookie dough consistency.
Using a 1 tbsp cookie scoop, scoop dough and place onto a prepared cookie sheet, spacing the dough about 2 inches apart. Press down on each dough ball with the palm of your hand so that it forms a thick round disk, about halfway between 1/4 and 1/2 inch thick. Smooth and round the edges of the cookies as needed. If desired, gently press a few sliced almonds on the top of each cookie. You can also use chopped almonds or other toppings or you can leave the cookies plain.
Bake cookies for about 12-14 minutes. Cookies should crack slightly during baking and look dry on the surface when done. Let cookies fully cool on baking sheet before removing.
Notes
Whisk the egg white before using to break it down so that it will evenly mix into the dough. You want to use the egg white from 1 large egg.
Make sure to use natural almond butter that has no added oils. This recipe will not turn out right if it has added oils.
This recipe works best with pure maple syrup or a similar syrup with a thin, watery consistency. Sugar-free sweeteners like Lakanto maple flavored syrup will also work. I don't recommend thick sweeteners like honey.
The cookies are only lightly sweetened. You can add sweet toppings or mix-ins like chocolate chips if you want sweeter cookies.
Nutrition estimate is calculated with pure maple syrup and not sugar-free syrup.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.