Preheat the oven to 350°F, and coat a 9x5” loaf pan with nonstick cooking spray or butter.
In a large bowl, stir together the oats, yogurt, milk, maple syrup, vanilla extract, butter, and egg whites. Mix until combined.
Add the flour, cinnamon, nutmeg, baking powder, baking soda, and salt into the same bowl. Mix all until combined.
Gently fold in the raisins.
Spread the batter into the prepared pan. Bake at 350°F for 30-35 minutes or until the top feels firm to the touch and a toothpick inserted into the center comes out clean. Cool in the pan for 10 minutes before transferring to a wire rack to cool completely.
Enjoy!