Crush cereal and combine with butter and brown sugar. Press half of mixture into an 8x8 pan.
In a mixing bowl, combine eggs whites and sugar and mix on high. Add the heavy cream and continue mixing for another five minutes.
Continue to add the fresh squeezed lemon juice and softened cream cheese. Mix on low speed until incorporated.
Fold the fresh strawberries into the cream mixture.
Pour strawberry mixture over crust in pan and sprinkle remaining crumble mixture over the top. Freeze for at least 3 hours.