Preheat the oven to 300° F (150° C). Grease the donut mold.
In a medium bowl, mix all the dry ingredients: almond flour, sweetener, cinnamon, and baking powder. Make sure to stir well.
In another bowl, mix together moist ingredients: butter, almond milk, and eggs. Then, pour the wet ingredients into the dry mixture. Beat with an electric hand mixer until you get a homogeneous mixture. If you want a pinch of extra flavor, you can add some grated lemon rind.
Pour the mixture into the donut pan. Fill until ¾ full. Bake for about 20 to 25 minutes.The donuts will be ready when you see they're turning golden.
Remove the donuts from the oven and let them cool. When they are at room temperature, put them in the fridge for 30 minutes.
Unmold the donuts and enjoy them plain or cover with chocolate topping.
Chocolate topping
Melt the chocolate with two tablespoons of oil in a microwave. Add a teaspoon of sweetener.
Dip the donuts, one by one, halfway into the chocolate mixture.
Remove and let stand for a few minutes.If desired, cover the donuts with chopped peanuts or grated coconut.
Refrigerate for about 20 minutes before serving.
Notes
The chocolate topping is included in the nutritional info.