Make crumble topping by combining butter, sugar, flour, cinnamon, lemon zest to taste, and pinch of salt to a large bowl and combine with a fork.
For the sweet cream cheese filling, mix cream cheese, 1/4 cup powdered sugar, lemon zest to taste, and pinch of salt into a small bowl and stir until smooth and creamy.
Spread a thin a layer of the sweet cream cheese filling on frozen CAULIPOWER crust, then spread the raspberry jam on top. Top crust with crumble topping and fresh raspberries.
Cook the "pie" directly on the middle oven rack for 12-15 minutes or until the crust and toppings are golden brown.
Make icing by combining 3/4 cup powdered sugar, remaining lemon zest and water.
Once the crust is out of the oven, let cool and drizzle icing on top. Enjoy!