Organic powdered sugar, to garnish(I recommend the Wholesome brand)
Line 8x8 baking pan with parchment and set aside. Preheat oven to 350 degrees F.
In a stand mixer with a paddle attachment, mix all the crust ingredients. The mixture will be thick. Press firmly into prepared pan in an even layer. Bake in preheated oven for 15 minutes or just until the crust is lightly browned. Remove from oven and set aside until ready to add your filling. Reduce oven temperature to 325 degrees F.
To prepare the filling, whisk together all the ingredients in a large bowl until well combined. The mixture will be very thin. Pour over warm crust and place in 325 degree oven. Bake for 17-20 minutes or until the filling is set and no longer jiggles.
Remove from oven and allow to cool completely, about 2 hours. Then, place in refrigerator to set for at least another 2 hours before serving. Once set, lift out of pan by grabbing the edges of the parchment paper and slice into squares. If desired, garnish with powdered sugar. Store leftover bars in an airtight container in the refrigerator.
If you choose to add the powdered sugar garnish, I recommend the Wholesome brand, which is organic, non-gmo and corn-free. Tapioca starch is used instead of cornstarch!