Make the filling and cake in ONE270/50h50 first. When it is done, release from mold
Place the support in the bottom of ONE280/60h71, add a thin layer of the batter, place the filling from ONE270/50h50 inside and place in the middle part.
Cover with batter until fully filled.
Bake, steam, or fridge, depends on what are you making
Release and decorate. Add top part with another cake, filling, mousse, chocolate, etc using mold SF172