1: Blend 30 g dessicated coconut and ½ teaspoon flour to obtain a fine powder.
2: Melt 30 g butter in a pan over low heat. Remove from heat, add 50 g icing sugar and mix.
3: Add the powdered coconut and mix again.
4: Finish by adding 1 egg white and mix well. The mixture is ready. Put in the refrigerator to wait. Preheat oven to 180°C (360°F).
5: Cut out a circle stencil of about 7 cm (3") diameter from a piece of card or plastic.
6: Place a sheet of slicone or cooking parchment on a baking sheet. Place the circle on this sheet and pour 1 teaspoonful of mixture in the centre.
7: Spread the mixture out carefully over the circle with a palette knife, while holding the circle still with your other hand. The thickness of the finished tuile depends on the amount of mixture: the more you use, the thicker your tuile will be.
8: Then lift off the circle and admire your lovely coconut tuile to be... Place the circle on the sheet again, leaving a space between tuiles, and repeat the operation.
9: For more explanation, see this small video.
10: Continue until all the mixture has been used, then put in the oven...
11: ...for about 10 minutes, or until the tuiles take on a lovely colour.
12: Unstick the tuiles from the sheet while still hot, and place to cool on a rack. If you'd like to give them the true tuile shape, leave them to cool pressed over something cylindrical, like a glass or a bottle laid on its side.
Remarks
The tuiles must be kept in an airtight tin, otherwise they will go soft rapidly. Unfortunately they only keep well for a day or two.