Gather all the ingredients for your keto cereal.
In a large mixing bowl combine the almond flour with the cinnamon, flax seed, baking powder, and a pinch of salt.
Soften the butter or ghee in another mixing bowl and add the Erythritol. Beat with an electric mixer until crumbly.
Add in the egg and mix to incorporate into a crumbly dough.
Fold in the flour mixture.
Wrap the dough with cling film and refrigerate for at least an hour.
Preheat the oven to 350°F/180°C.
Roll out the dough between two pieces of parchment paper. If the dough is too sticky place in the freezer for 10-15 minutes and try again.
Cut the sheet of dough lengthwise and then crosswise into squares.
Prick each piece with a toothpick or fork to create designs.
Transfer with the parchment paper on a baking pan, and place in the freezer for 10 minutes before baking.
Bake for about 10 minutes, until golden.