Here's a good idea when your raspberries and blueberries are cropping at the same time:
|Layer Cake Topping|
The constituent parts before construction:
And here it is all assembled!
I'm about as smug as Channel 4 today !!!
I followed the recipe from Scandilicious Baking by Signe Johansen - That's a wicked lime and passionfruit curd in addition to the whipped cream between the layers.