Preheat your oven to 190°C/170°C(fan)/375°F/Gas 5. Grease a large baking dish.
In a large mixing bowl, whisk 2 Eggs. Add 250 ml Skimmed milk, 80 ml Maple syrup, 1 teaspoon Vanilla extract and 180 g Apple sauce. Mix again.
Add 230 g Oats, 1 teaspoon Ground cinnamon, 0.5 teaspoon Ground ginger and 1 teaspoon Baking powder. Mix well to combine everything.
Add chunks of 2 Apples (reserving a few) and 50 g Pecans (chopped). Mix these in.
Transfer the oat mixture to the greased baking dish. Spread it out and add the remaining apple chunks to the top.
Bake for 40-45 minutes.
Notes
For maximum sweetness, use really ripe apples.
Let the batter rest for a couple of minutes before pouring it into the pan. This will allow it to thicken up, and stop the apples sinking to the bottom when folded in.
For a "protein swirl", blend some cottage cheese and swirl it into the top of the oats before baking.
You can use frozen apples too and you don't need to defrost them first.
Allow it to cool before slicing it all up for storage.