- In a food processor grind the sunflower seeds, coconut, erythritol or stevia and salt together until fine crumbs. 
- Slowly pour in melted butter and process until combined. 
- Press mixture into the bottom and up sides of a 9 inch pie plate then set aside. 
- In a blender, add strawberries, lemon juice, salt and liquid stevia. 
- Blend until pureed. Taste and adjust strawberry puree and add more sweetener if needed. Set aside. 
- In a stand mixer, or large bowl using an electric hand mixer, whip cream cheese until smooth with no clumps. 
- Pour in heavy cream and vanilla stevia and blend on high until stiff peaks and nicely whipped. 
- Pour the pureed strawberries into the whipped cream cheese filling mixture and blend until incorporated well. 
- Pour strawberry mixture into pie crust, cover and freeze for 4 hours or overnight.