Start by layering white cake cubes into the base of the cup.
Add a layer of sliced strawberries and blueberries.
Top berries with a scoop of vanilla ice cream.
Repeat steps with more white cake and berries. Be sure to press layers down to allow more dessert to fit into the cups!
Top with a scoop of buttercream icing and more berries. Secure shut with a dome lid and store in the freezer until ready to serve. Pull cake cups out of freezer 10 minutes prior to serving.