Preheat your oven to 350ºF. Combine all dry ingredients in a mixing bowl. Gently mix to combine.
Add the wet ingredients to the dry and mix well.
Carefully pour the mixture into your baking dish, and place it in the oven.
Bake for 35 minutes, until golden brown and baked through.
Notes
This fits in either a 12" cast iron skillet or a 9x13 baking dish.
Consider adding pumpkin or persimmon puree to make this breakfast stretch even further.
Choose firm, crispy apples like Honeycrisp, Granny Smith, or Gala for the best results.
Remember, the liquid is key to a moist, even baked consistency. I've made it too runny and too dry before, but these measurements get it just right!
Let your oatmeal bake cool for at least 10-15 minutes before cutting and serving. This allows the mixture to set and the flavors and texture to meld together.
This recipe keeps quite well in the fridge and honestly, the flavor is enhanced after a day or two.