Preheat your oven to 180°C/160°C(fan)/350°F/Gas 4. Line a large baking sheet with parchment paper.
In a large mixing bowl, add self-raising flour, baking powder, milk, eggs, vanilla extract and maple syrup. Whisk to form a smooth batter.
Pour the mixture into the lined baking tray and smooth into an even layer.
Add sliced banana, chopped strawberries, chocolate chips and blueberries, either mixed up, or put each one in a quarter.
Put in the oven and cook for 15 minutes, until a toothpick comes out clean.
Cut into squares and freeze on a baking sheet. Once frozen, transfer to a freezer bag. Reheat in the microwave or toaster oven.
