Mix all the ingredients in a bowl. Add a little more flour if needed until the dough comes together.
Roll the dough into a 1–2 cm thick log and place it in the freezer or fridge until it hardens. This will make it easier to slice.
Slice the log into circles and place them on baking paper, leaving about 3 cm of space between each cereal cookie.
Bake at 180°C for 6 minutes no longer, or they will burn.
Let the cookies cool completely before serving.
