Preheat the oven to 450 degrees F. Lightly coat a baking sheet with cooking spray or grease with shortening. In a mixing bowl combine biscuit mix, whole wheat flour, and sunflower nuts, if desired. Stir in yogurt just until mixture is moistened.
Drop dough by spoonfuls onto prepared baking sheet. Bake in the 450 degree F oven for 8 to 10 minutes or until golden. Makes about 8 biscuits.