To prepare a whole wheat huckleberry crumb muffins recipe, first you'll need to prepare the muffin tin. Place the flour, baking powder, sugar, cinnamon, and nutmeg in the large mixing bowl. Add the wet ingredients to the dry ingredients and mix until the ingredients are evenly combined. Pour the batter into the prepared muffin pan and bake for 18 to 20 minutes. Remove from the oven and allow to cool for 5 minutes before serving.