Toast the Flour Base: In a large, dry skillet over medium-low heat, add the almond flour. Stir continuously for 3–4 minutes until it becomes fragrant and takes on a light, golden-brown color. Immediately transfer the toasted flour to a large mixing bowl to prevent it from burning.
Bloom the Gelatin: In a separate small bowl, sprinkle the gelatin powder over the cold water. Set it aside for 5 minutes to bloom and soften while you prepare the butter.
Create the Brown Butter: Return the now-empty skillet to medium heat and add the unsalted butter. Allow it to melt completely, foam up, and then subside. Continue to swirl the pan until the butter develops a nutty aroma and small, brown specks appear at the bottom, about 3–4 minutes. Remove from the heat instantly to avoid burning.
Form the Dough: Carefully pour the hot browned butter into the bowl with the toasted almond flour. Add the powdered sweetener, sea salt, and cinnamon (if using) and mix thoroughly with a spatula. Add the bloomed gelatin and vanilla extract, stirring vigorously until a cohesive dough forms.
Fold in Chocolate: Let the dough cool for 2–3 minutes so it's warm, not hot. Fold in the sugar-free chocolate chips until they are evenly distributed throughout the dough.
Scoop and Shape: Using a 1.5-tablespoon cookie scoop, portion the dough onto the parchment-lined baking sheet. Gently press down on the top of each dough ball with your palm or the bottom of a glass to flatten it into a classic cookie shape, about a ½-inch thick.
Chill and Set: Transfer the baking sheet to the refrigerator. Chill for at least 30 minutes, or until the cookies are firm to the touch and fully set.