01 - Preheat oven to 350°F (175°C). Grease a 9x9-inch baking dish.
02 - In a large bowl, combine rolled oats, nuts, baking powder, ground cinnamon, ground nutmeg, and salt.
03 - In a separate bowl, whisk together milk, eggs, melted butter, maple syrup, and vanilla extract until well blended.
04 - Add the wet ingredients to the dry mixture and stir until fully combined. Gently fold in diced apples and dried fruit.
05 - Transfer mixture to the prepared baking dish, spread evenly, and bake for 35 minutes or until golden brown and just set.
06 - Allow the oatmeal bake to rest for 5 minutes before serving. Enjoy warm, with additional milk or a spoonful of yogurt if desired.