Place all crust ingredients into a blender or food processor and pulse until fully broken down and combined. Press into a 6 inch pan.
Rinse out your blender, then add all the cake ingredients into the cake. Blend on medium speed until creamy and dreamy. Taste and check consistency. You may need to add a little more lemon juice or apple sauce to sweeten it.
Mix together the berries and lemon juice and spread on top of the cake.
Freeze at least 4 hours, but let it sit at room temperature for about 10-15 minutes before cutting and serving.