Preheat the oven to 180c. Line a 8x8 baking tin with foil or parchment paper and lightly grease.
Whack all ingredients into a bowl, stir till fully combined.
Pour into the tin, level and smooth out. Sprinkle on the banana chips and push them down with a spoon. Pop bin the oven on the middle shelf for 1 hour.
Cool for 10mins in the pan before removing.
Cut into squares.
To warm- place in the oven for 5 mins or pop in the microwave on low till warmed through.
These will last up to 4 days at room temp or can be frozen.