I've been making this (or versions of it) since I was 12 years old. This is an evolved version of the "Quaker Oatmeal Apple Crisp". It is easy to make and to play with, try adding some chopped walnuts to the crisp or use a completely different fruit for the filling, such as peaches. It's great warmed up in the microwave but it's equally good straight out of the fridge. Wonderful comfort food for winter or exam time. Very easily converted into vegan by substituting margarine for butter.