Grease an 8-inch square pan with coconut oil and grease well with coconut oil. Set aside.
Add the walnuts, almond flour, pitted dates, coconut oil and salt to a food processor or high-powered blender and pulverize until it comes together into a sort of sticky dough, with small walnut bits remaining. Don’t over process, or it’ll turn into nut butter! Press the date dough evenly along the bottom of the prepared pan.
Let set in the freezer for at least 3 hours or until completely firm. You can also store it in the refrigerator, but it will take longer to initially freeze.
You can also cover the cashews in very hot/boiling water and let them sit for about an hour if you want to speed up the process - it won't be quite as creamy, but it will do the trick!