Preheat oven to 325 degrees F. Grease a 8 by 8 inch casserole dish with tallow, butter or coconut oil. Set aside.
To make the carnivore crust, place all the ingredients into a large bowl and use a fork to combine well. Place the mixture into the prepared casserole dish and bake for 8-10 minutes or until light golden brown.
While the crust bakes, make the lemon bar filling by placing all the ingredients into a large bowl and use a hand mixer to combine well.
Once the crust has pre-baked, remove from the oven and allow to sit for 5 minutes before pouring the lemon bar filling on top of the crust. Turn oven down to 300 degrees F. Place back into the oven for 12-15 minutes or until the lemon filling is set and cooked through.
Remove from oven and allow to cool completely before slicing and serving.
Store extras in an airtight container in the fridge for up to 7 days. Do not freeze.