Orange Currant muffins

This recipe is inspired by a recipe in Wild About Muffins by Angela Clubb, but I've changed it so much, I think the recipe needs to be written down in its perfected form.

Preheat oven to 400 F and prepare pan.
In a large bowl, combine:
zest of 1 orange
1 egg
1/3 cup canola oil
1/3 cup sugar
juice of 1 orange (about 1/2 cup)
1/2 cup currants
In a smaller bowl, combine:
1/2 cup oat flour (can substitute white flour)
1/2 cup white flour
1/2 cup whole wheat flour
1 tsp. baking powder
1 tsp. baking soda
1/4 tsp. nutmeg
1/2 tsp cinnamon
Combine wet and dry mixtures, pour into pan, and bake for 15-20 minutes.