Preheat and prep: Heat your oven to 350°F (175°C).
Line a baking sheet with parchment paper for easy cleanup and crisp edges.
Mix the dry ingredients: In a medium bowl, whisk together 1 1/2 cups almond flour, 1/3 cup golden flaxseed meal, 1/2 cup unsweetened shredded coconut, 1 teaspoon baking powder, 1 teaspoon ground cinnamon, and 1/4 teaspoon kosher salt.
Cream the fats and sweetener: In a large bowl, beat 1/2 cup softened unsalted butter with 1/2 cup granulated keto sweetener until light and slightly fluffy, about 1–2 minutes. If you have a brown-style keto sweetener, swap in 2 tablespoons for a richer, “molasses-like” note.
Add the egg and vanilla: Beat in 1 large egg and 1 1/2 teaspoons vanilla extract until smooth. The mixture should look creamy.
Combine wet and dry: Add the dry ingredients to the wet and stir until a thick dough forms.
If it seems too dry or crumbly, mix in 1–2 teaspoons unsweetened almond milk or water. The dough should hold together when pressed.
Fold in mix-ins: Stir in 1/3–1/2 cup of your choice: sugar-free chocolate chips, chopped nuts, or a blend. Keep total add-ins modest to maintain structure.
Portion and shape: Scoop heaping tablespoons of dough (about 1 1/2 tablespoons each).
Roll into balls and place on the prepared sheet, spacing 2 inches apart. Gently press to about 1/2-inch thickness; these don’t spread much on their own.
Bake: Bake 10–12 minutes, until the edges are lightly golden and the tops are set. Do not overbake; they firm up as they cool.
Cool completely: Let cookies cool on the sheet for 10 minutes, then move to a rack.
Cooling allows the structure to set and keeps them chewy.
Optional finishing touch: While warm, lightly sprinkle with a pinch of flaky salt to enhance the flavors.