Homemade Thin Mints (Low Carb and Gluten Free)

Name: Homemade Thin Mints (Low Carb and Gluten Free)
Prep time: 30 min
Cook time: 30 min
Total time: 1 h
Cuisine: American
Ingredients: 1 3/4 cups almond flour; 1/3 cup cocao powder; 1/3 cup Swerve Sweetener; 1 tsp baking powder; 1/4 tsp salt; 1 large egg (slightly beaten); 2 tbsp butter (melted); 1/2 tsp vanilla extract; 1 tbsp coconut oil, (butter, or 1/2 ounce cocoa butter* (see cook's notes)); 7 oz Lily's dark chocolate (or other sugar-free dark chocolate (such as 90% Lindt chocolate), chopped); 1 tsp peppermint extract