Prepare the cauliflower rice by thawing frozen cauliflower and squeezing out moisture, or by processing fresh florets until they resemble rice.

Mix the eggs with ground flaxseed, garlic powder, onion powder, salt, and black pepper in a bowl. Then add cauliflower rice and cheddar cheese, stirring until combined.

Preheat the waffle iron to medium-high and grease the plates.

Spoon half of the mixture onto the hot waffle iron and close the lid. Cook for 4-5 minutes until golden brown.

Remove the chaffle and let it cool on a wire rack. Repeat the process with the remaining mixture.

Serve warm with optional toppings or store in an airtight container.