For the base: Cream 60 grams butter and 100 grams sugar for 15 seconds/speed 5. Add the egg. Mix 15 seconds/speed 5. Add the flour. Mix 30 seconds/bread dough speed. This should result in a crumbly mixture which will hold together when pressed.
Press 2/3 of the mixture into the buttered pan. Set 1/3 aside.
For the filling: place all remaining ingredients in TM bowl (There is no need to wash the bowl first, just wipe it out well). Press turbo several times to combine ingredients. Cook 6 minutes/Varoma/Reverse/Speed 1. The mixture should be creamy. Pour over base. Sprinkle remaining base mixture over filling. Bake 25 minutes.