Finely grind the oats and almonds in a food processor or blender. Add the dates, mix everything into a dough-like mixture, set aside.
Mix all of the ingredients together in a food processor or blender into a homogeneous mixture. Loosen the mixture from the sides of the container when necessary to ensure everything is well mixed.
Place the tin of coconut milk in the fridge over night. Skim off the hard, upper layer with a spoon, then use the whisk attachment on a hand mixer to beat until stiff.
Layer the banana slices, caramel, coconut cream and parfait mixture into glasses, serve immediately.