Mix the biscuit crumbs and powdered sugar in a large bowl. Then add the margarine, the orange mix and the nuts. Mix the mixture well and then use your hands to form balls about 3 cm in diameter. Roll the balls through the desiccated coconut, place on a baking sheet or large board and refrigerate in the refrigerator for about 1 hour so that they set.
Always keep the coconut balls in the refrigerator.