Preheat your oven to 350°F (175°C) and lightly grease a baking dish or line with parchment paper.
Mix the Base:
In a large bowl, combine the grated apples, mashed banana, and water. Stir until smooth.
Add the Dry Ingredients:
Fold in the oats, dried blueberries, raisins, and any optional spices like cinnamon or nutmeg. Mix until well combined.
Bake:
Pour the mixture into the prepared dish, spreading it evenly.
Bake for 25–30 minutes, or until the top is lightly golden and the mixture is set.
Serve:
Let cool slightly before slicing. Enjoy warm for breakfast or as a snack!
