In a large bowl, mix together the coconut oil, maple syrup, lemon zest and lemon extract.
1/4 cup (56 grams) refined coconut oil, 1/3 cup (107 grams) maple syrup, 1 tablespoon lemon zest, 1 1/2 teaspoons lemon extract
Add the almond flour, sifted coconut flour, baking soda and salt.
1 1/3 cups (133 grams) almond flour, 2 tablespoons (17 grams) coconut flour, 1/2 teaspoon baking soda, 1/8 teaspoon salt
If the dough is too soft to roll into balls, refrigerate for 30 minutes or until firm.
Preheat the oven to 350°F (176°C).
Line a baking sheet with a piece of parchment paper or a Silpat.
Roll the dough into twenty-four 3/4" balls and place 1" apart on the prepared baking sheet.
Press the balls down slightly and bake for 10 minutes. The cookies should crackle a little.
Let the cookies cool for 5 minutes on the baking sheet and then remove to a wire rack to cool completely.
Once the cookies are cool, assemble the cookie sandwiches by placing 2 teaspoons of curd between two cookies.
1/3 - 1/2 cup lemon curd
Place the cookies in an airtight container and refrigerate for up to 5 days.