Soak walnuts and dates in water for two to 24 hours. Drain and rinse before use.
Soak cashews in water for two to 24 hours. Drain and rinse before use.
Grease an 8-inch springform pan. Put all crust ingredients (walnuts, dates, maple syrup and almond flour) in a food processor and blend until smooth. Press the crust onto the bottom of the greased pan. Place into the freezer while making the filling.
Place cashews into clean food processor with maple syrup, lemon juice, lemon zest, vanilla and coconut oil. Blend until smooth, about two to three minutes
Remove crust from the freezer. Pour and spread the filling into the crust. Wrap airtight and refrigerate for two hours before serving.