Preheat your oven to 350°F (175°C).
In a mixing bowl, combine almond flour, erythritol, baking powder, and salt.
Add in melted butter and vanilla extract, mixing until smooth.
In a separate bowl, combine cinnamon, erythritol, and melted butter for the swirl.
Spoon the batter into a lined baking dish, spreading evenly.
Drizzle the cinnamon swirl mixture over the batter and gently swirl it with a knife.
Bake in the preheated oven for 25-30 minutes or until golden brown.
Let the bites cool in the pan for 10 minutes before transferring to a wire rack.
Slice into squares or bite-sized pieces and enjoy.
