Magic Fruit-and-Veggie Cupcakes

Ingredients

• Cooking spray (optional)
• 1/2 cup all-purpose flour
• 1/2 cup whole-wheat flour
• 1 tablespoon soy flour
• 2 tablespoons wheat germ
• 1/2 cup bran flakes cereal or old-fashioned oats (or a combination)
• 1/4 cup ground flax seeds
• 1 teaspoon baking soda
• 1 teaspoon baking powder
• 1 teaspoon ground cinnamon
• Pinch of salt
• 1 large egg
• 1/4 cup packed light brown sugar, plus more for topping (optional)
• 2 tablespoons extra-virgin olive oil
• 1 teaspoon vanilla extract
• 2/3 cup plus 1 tablespoon whole milk
• 3/4 cup grated or finely chopped vegetables (carrots, zucchini and/or spinach)
• 3/4 cup grated or finely chopped fresh or dried fruit (apples, pears, pineapple and/or raisins)