In a bowl, combine oats, coconut flour, and erythritol. Mix well.

In another bowl, beat the egg, then add vanilla essence and vegetable milk (or water).

Combine the wet and dry ingredients and knead until you form a dough. Shape into a ball.

Divide into small portions, roll into balls, and place them on a baking sheet lined with parchment paper.

Cover with another sheet of parchment and press down with a tray to flatten them evenly.

Bake in a preheated oven at 180°C (350°F) for 18–20 minutes. Watch carefully to prevent burning.

Remove from the oven and let them cool on a wire rack until firm and crispy.