In a small bowl combine almond flour, sweetener and peanut butter. Mix well then put this dough in the fridge for half an hour so the mixture will become firm to mold easily.
Mold the peanut butter mixture into 20 balls. Set aside.
In a different bowl, add butter and chocolate in then melt it using the microwave for 10 seconds. Remove and stir then put back in the microwave for 5 more seconds. Repeat the process until the mixture is completely homogeneous and no longer has lumps. You can also use a pan to melt the chocolate and butter together on low heat.
Roll the peanut butter balls on the chocolate mixture. Make sure the balls are coated with chocolate on all sides. Repeat until you finish coating all the balls.
Refrigerate the balls for at least 15 minutes and enjoy.