Preheat oven to 350 F.
In a food processor, grind the cashews for approximately 20 seconds or until you have a coarse nut meal.
Add in the pitted dates and honey and blend further for approximately 1-2 minutes or until everything is well blended.
Empty the mixture out into an oiled 8 x 12 casserole dish (a dish that is slightly bigger is fine too.).
Spread the mixture out evenly over the bottom of the casserole dish and then press down firmly to create a firm crust.
In a medium mixing bowl, whisk together all the filling ingredients. Mix well to get rid of any clumps from the flour.
Pour the filling into the crust and bake for 25 minutes.
Cool enough to be able to set it in the fridge, and then chill in the fridge overnight. Cut into squares and serve.
Note that when you take it out of the oven, the filling will still have some jiggle to it. This will go away as it chills.