The best Almond Flour Thumbprint Cookies that are gluten-free, made with 6 ingredients and have slightly crispy, buttery cookie base with your choice of jam filling.
Preheat oven to 350 degrees F and line 2 large baking sheets with unbleached parchment paper or silicone baking mats.
In a large bowl, add almond flour and baking soda; whisk until no lumps. Add butter, maple syrup and vanilla extract. First mix with a fork, then with a spatula and finish mixing by hand, until cohesive dough forms.
Scoop 1/2 tbsp of dough, roll into a ball, place on previously prepared baking sheet and gently make an indent with a thumb. Repeat with remaining dough.
Fill openings with jam.
Bake for 10-12 minutes (before cookies start browning). Remove from the oven and let cool for 30 minutes before enjoying.
Notes
Store: In a cookie jar for up to 5 days. You can add a slice of bread to help absorb moisture from the air. If you find your cookies start to dry out, place them in an airtight container. I would not recommend doing so at the start because you don't want cookies to get soggy and floppy.
Freeze: In an airtight container for up to 3 months. Thaw on the counter for a few hours.
Coconut oil: I have not tried using it to make thumbprint cookies but in my experience, it results in more crunchy cookies. It will work though.
Any other flour: Gluten free flours are very finicky, all flours are. I have not tested this recipe with any other flour and do not recommend to do so. Almond flour is very unique and can't be easily replaced.