Preheat oven to 375℉. Gather your ingredients so that you have everything close at hand on the counter or table.
Prepare Ingredients
Using a fine-edged grater, zest one orange. If desired, squeeze the juice from 2-3 oranges, enough to make 3/4 cups.
2 teaspoons grated orange zest, 3/4 cup orange juice
Chop the black walnuts with a knife and cutting board or a nut chopper.
1 cup black walnuts
Using a food processor, coarsely chop the cranberries.
1 1/2 cups cranberries
Make the Muffin Batter
In a large bowl, combine the all-purpose flour, granulated sugar, baking powder, ground nutmeg, cinnamon, ground ginger, baking soda, salt, and orange zest.