01 -
Preheat the oven to 163°C and grease a 23 x 33 cm baking dish with nonstick spray.
02 -
In a large bowl, whisk together the eggs, milk, melted butter or coconut oil, maple syrup, brown sugar, and vanilla extract until smooth and combined.
03 -
Add the rolled oats, baking powder, and ground cinnamon to the wet mixture, stirring until fully incorporated.
04 -
Allow the oatmeal batter to rest for 10 minutes to absorb the liquids and thicken.
05 -
Spread the batter evenly into the prepared baking dish and bake for 20 to 25 minutes until the top is golden brown and set.
06 -
While baking, whisk powdered sugar with 15 to 30 milliliters of milk in a small bowl until smooth. Adjust consistency by adding more milk or powdered sugar as needed.
07 -
Once baked, cool for 10 minutes. Cut into squares, drizzle with icing, and serve warm for best flavor.