There are different versions of thumbprint cookies. Some are rolled in crushed nuts, others in granulated sugar, and still others in coconut. Some are filled with jam and others with lemon curd. I use lemon curd as the filling and roll my thumbprint cookies in coconut to complement the coconut flour used in these gluten-free cookies. The coconut toasts lovely as the cookies bake.
I find that using only a gluten-free all-purpose flour in baking results in a somewhat underwhelming flavor for my taste. That’s why I often add some almond and/or coconut flour to my baked products. Either or both contribute flavor and I think produce better textured products.
As I tested this newly-developed recipe, I found that a hint of cardamon gives a subtle and pleasing flavor to the cookies. Somewhere between a one-quarter teaspoon and a half teaspoon is about the right amount so….either a heaping 1/4 teaspoon or a scant 1/2 teaspoon of cardamon will work. The cardamon pairs well with the lemon curd used as a filling/topping on the thumbprints.
Because some gluten-free flours, like coconut flour for example, absorb a lot of liquid, I use one whole extra-large egg as well as the yolk from one large egg to ensure there is enough moisture in the cookie dough. I generally have three different sizes of eggs in my refrigerator (extra large, large, and medium), especially when I am doing gluten-free baking. This is because sometimes two extra-large eggs would be too much but more than one is needed. That’s when I use either large or medium-sized eggs to supplement the egg content in gluten-free baking or, sometimes as in the case with these cookies, I just use a certain size of egg yolk because that is all that is needed. Save the white from the large egg in this recipe as it will be needed to make the egg wash in which to dip each ball before rolling in coconut. This egg wash adheres the coconut to the cookies.
The cookie dough benefits from being chilled for about 30 minutes in the refrigerator before being formed into balls that are about 1″ in diameter. This allows the dough to firm up and makes the shaping of the cookie balls easier. For these cookies, I use 3/4 oz of dough. I recommend the use of a digital kitchen scale to weigh out portions of the dough to ensure uniformity of size in cookies. You can, of course, “eyeball” the amount of dough for each ball but, if you want perfectly uniform cookies, I recommend weighing the dough, at least for the first 2-3 cookie balls to get a sense of how much dough is needed for each cookie.
These cookies have a soft tender crumb and are not too sweet. The lemon curd adds tremendous flavor and texture to the cookies. Click here for my recipe for the lemon curd. To make the indent in each cookie for the curd, use either the tip of your thumb, the round end of a wooden spoon, or the round bowl of a ¼ tsp measuring spoon. Gently press an indent into the center of each cookie, pressing about half-way down through the cookie. Bake the cookies and, as soon as they come out of the oven, immediately fill each cookie with about 1 teaspoonful of lemon curd. If lemon curd is not to your taste, simply use your favorite jam as the filling.
Gluten-free Lemon-filled Thumbprint Cookies
Ingredients:
½ cup butter
½ cup granulated sugar
1 extra large egg
1 large egg yolk (save the egg white for the egg wash)
1 tsp vanilla
¼ tsp almond flavoring
1 cup all-purpose gluten-free flour
½ cup almond flour
¼ cup coconut flour
1¾ tsp xanthan gum
1/8 tsp baking soda
¼ tsp baking powder
¼ tsp salt
Scant ½ tsp cardamom
3 oz flaked coconut
1 large egg white beaten with 1 tbsp water
Apx. ½ cup lemon curd
Method:
Line baking sheet with parchment paper.
Using the paddle attachment in the bowl of stand mixer, cream the butter. Gradually add the sugar. Beat well. Add the egg and extra egg yolk. Beat. Mix in the vanilla and almond flavoring.
In separate bowl, combine the flours, xanthan gum, baking soda, baking powder, salt, and cardamom. Whisk together very well. Blend into the butter-sugar-egg mixture. Mix well. Cover bowl with plastic wrap and chill dough for 30 minutes in refrigerator.
Preheat oven to 350°F. Place coconut in one small bowl and the beaten egg white and water mixture into a second bowl. Pinch off pieces of the dough and roll into balls, approximately 1” in diameter (if you weigh the dough, each piece should weigh ¾ oz.) Dip each cookie ball in the egg white wash then roll in the coconut. Place cookies on prepared baking sheet, arranging them about 2” apart. Using thumb tip, end of wooden spoon, or the round bowl of a ¼ tsp measuring spoon, gently press an indent into the center of each cookie. Bake for 20-22 minutes. Immediately fill each cookie with about 1 teaspoonful of lemon curd as soon as the cookies come out of the oven. If indents are not clearly defined in each cookie, gently reform them using one of the afore-mentioned methods. Transfer cookies to wire rack to cool completely. Store in airtight container. If desired, add a light dusting of confectioner’s sugar to the cookies just at the time of serving.
Yield: Apx. 22 cookies
Note: Jam of choice may be substituted for the lemon curd, if desired.
A delightful gluten-free cookie with a soft tender crumb and a decadent topping of lemon curd.
Ingredients
- ½ cup butter
- ½ cup granulated sugar
- 1 extra large egg
- 1 large egg yolk (save the egg white for the egg wash)
- 1 tsp vanilla
- ¼ tsp almond flavoring
- 1 cup all-purpose gluten-free flour
- ½ cup almond flour
- ¼ cup coconut flour
- 1¾ tsp xanthan gum
- 1/8 tsp baking soda
- ¼ tsp baking powder
- ¼ tsp salt
- Scant ½ tsp cardamom
- 3 oz flaked coconut
- 1 large egg white beaten with 1 tbsp water
- Apx. ½ cup lemon curd
Instructions
- Line baking sheet with parchment paper.
- Using the paddle attachment in the bowl of stand mixer, cream the butter. Gradually add the sugar. Beat well. Add the egg and extra egg yolk. Beat. Mix in the vanilla and almond flavoring.
- In separate bowl, combine the flours, xanthan gum, baking soda, baking powder, salt, and cardamom. Whisk together very well. Blend into the butter-sugar-egg mixture. Mix well. Cover bowl with plastic wrap and chill dough for 30 minutes in refrigerator.
- Preheat oven to 350°F. Place coconut in one small bowl and the beaten egg white and water mixture into a second bowl. Pinch off pieces of the dough and roll into balls, approximately 1” in diameter (if you weigh the dough, each piece should weigh ¾ oz.) Dip each cookie ball in the egg white wash then roll in the coconut. Place cookies on prepared baking sheet, arranging them about 2” apart. Using thumb tip, end of wooden spoon, or the round bowl of a ¼ tsp measuring spoon, gently press an indent into the center of each cookie. Bake for 20-22 minutes. Immediately fill each cookie with about 1 teaspoonful of lemon curd as soon as the cookies come out of the oven. If indents are not clearly defined in each cookie, gently reform them using one of the afore-mentioned methods. Transfer cookies to wire rack to cool completely. Store in airtight container.
Notes
Note: Jam of choice may be substituted for the lemon curd, if desired.
Recipe for Lemon Curd here: https://myislandbistrokitchen.com/2017/04/14/luscious-lemon-curd/
Check out these other gluten-free cookie recipes from My Island Bistro Kitchen:
Gluten-free Snickerdoodles
Gluten-free Melting Moments Cookies
Gluten-free Earl Grey Cranberry-Orange Shortbread
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