Make the cream. Place in a blender linseed oil, banana, apple, (you can peel the apple if you like but I prefer to keep it) vanilla, sweetener. Whiz until smooth.
Sprinkle ground linseed in the bottom of a suitable glass dish or dishes
Cover with a layer of berries or other fruit. Then top with a layer of the "cream".
Repeat: a layer of ground linseed, berries (or fruit) and cream.
Top with chopped nuts or pumpkin seeds and some decorative berries.