Cook apples, date paste, cinnamon, and lemon juice for 10-12 minutes until softened
Stir in flour and cook for 2 minutes
Cool the apple filling
Mix oats, flour, date paste, cinnamon, and salt
Add plant milk until mixture holds together
Press ⅔ of the mixture into a lined 20x20cm pan
Spread apple filling on top
Crumble remaining oat mixture on top
Bake at 180°C for 35-40 minutes
Cool completely before cutting