In a bow, combine the butter and cream cheese.

Using a fork, mash to combine.

In a separate bowl mash the strawberries.

Mix in the sweetener.

You can either try to incorporate the strawberries into the cream cheese mixture with a spatula, or place everything in a food processor and pulsing a few times.

Pipe the mixture into ice cube molds and freeze for at least 2 hours.

Keep frozen.