Combine the yogurt and quark: In a bowl, gently mix the Müllerlight yogurt and plain quark until smooth and creamy.
Prepare the glass: Start by adding a layer of finely chopped Gingerbread Hi-fi crumbs to the bottom of a large tumbler or sundae glass.
Layer the banana: Arrange sliced banana pieces on top of the Hi-fi crumbs.
Add the yogurt mixture: Spoon the yogurt and quark mixture evenly over the banana layer.
Finish with toppings: Sprinkle the remaining Hi-fi crumbs and banana slices on top to create a beautiful and delicious presentation. Enjoy your guilt-free Gingerbread Banana Custard Pot!