I designed these cake containers. Storage space has around 50mm of diameter.

The covers will take a little longer to print cause they are multicolour. 

I have added a second profile in case you want to print the parts for the covers separately. This will save you some filament.

If you do this, when you print out the cake (white one), fitting the top pieces of the lid might be a little tricky, however I tested them and they fit, try to place the cream first then remove and find the place for the strawberries , then after you find the correct position you can glue them.