Prepare a 13 x 8 (approx) inch tin - line with paper etc.
Put all of the ingredients for top and bottom into a mixing bowl, except a few tablespoons of oats
Mix together with hand or stand mixer in full power for approx 1 minute until a bread crumb mix has been achieved
Put two thirds of the mixture into the prepared tin and press down evenly using the back of a spoon
Put all of the filling ingredients into a blender or a bowl with hand blender. Blend until evenly combined. This is why I prefer frozen fruit, it's not so messy. Spread over the base layer
Add the rest of the oats to the leftover base mixture and stir through - this is purely for texture, if you prefer you can just use all of the oats and not hold any back - spread evenly over the filling
Put the tin into a preheated oven @ 160ºC gas 2 and bake for 35 - 40 minutes until lightly golden
Remove from oven and mark into slices/squares whilst warm
Leave to cool completely in the tin. Eat as a cake bar or serve with ice-cream or custard as a pudding
