How to Make It
Grease a 10x15-inch rimmed baking sheet with cooking spray or butter. Combined the butter, flour, cornmeal, confectioners’ sugar, and salt in the bowl of a food processor; process until combined and a ball of dough begins to form. Gather the dough and disperse pieces of it over the greased pan; using your fingertips, press the dough evenly along the bottom and up the sides of the pan to form a crust. Refrigerate at least 1 hour.
Preheat oven to 375°.
Combine the strawberries, granulated sugar, tapioca flour, cardamom, and lemon zest in a large bowl, stirring gently to combine. Spoon the strawberry mixture over the crust in an even layer. Bake at 375° for 30 minutes.
While the pie bakes, prepare the topping. Combine the flour, brown sugar, macadamia nuts, and salt in a medium mixing bowl; stir in the butter until clumps begin to form.Carefully remove pie from oven and sprinkle the macadamia nut mixture evenly over the strawberries. Return pie to oven and bake at 375° for an additional 20-25 minutes or until topping is brown and juices are bubbling. Allow pie to cool slightly before serving.