Butter (for pan)
1 cup whole-wheat flour
1 cup all-purpose flour
2-1/2 teaspoons baking powder
1/2 teaspoon table salt
1/2 teaspoon ground cinnamon
1/3 cup salted butter, melted
1 large egg
2/3 cup firmly packed light-brown sugar
1 cup milk
1 cup finely grated carrot
1/2 cup dried cranberries
Preheat oven to 400°. Grease a 12-cup muffin pan. In a mixing bowl, combine flours, baking powder, salt, and cinnamon, and whisk together. In a second mixing bowl, combine melted butter, egg, brown sugar, and milk, and blend until smooth.
Add dry ingredients to wet, stirring to combine. Stir in carrot and cranberries. Fill muffin cups and bake until golden brown on top, about 20 minutes.