Pre-heat oven to 180ºC.
Pour the oats into a blender or food processor and blend until they turn into a fine flour. add the melted butter and maple syrup and turn the machine on again for a few seconds until the mixture gathers into a ball and is totally combined. You can add a little water, one teaspoon at a time if the mixture seems dry and flakey.
Divide the dough into 12 and place into small mini tart tins. Use your fingers to press it down.
Bake in the oven for 25 mins until the sides have browned, then remove from the oven and leave to cool fully before filling.
To make the filling, pour the yogurt into a bowl and add the bananas. Mash together until the mixture is smooth and creamy.
Spoon into the mini tarts filing right up to the top, then decorate with strawberry slices then sprinkle over a little fresh mint.
Store in the fridge until ready to serve.