Add all ingredients to a bowl and mix with a spoon to combine. You might need to let it sit a few minutes for the coconut flour to fully absorb. Divide into 6 equal pieces and shape into little cakes.
Heat butter in a large frying pan over medium high heat until melted and foaming. Place crab cakes in pan, depending on the size of your frying pan you may need to cook in two batches.
Cook on one side until you can see it colouring around the edges. Gently lift the edge of one with a spatula to check the colour. When it’s cooked and golden coloured. Gently flip and cook the other side until also golden and coloured. Remove, cool and serve.