Mix milk, eggs and cheese in the bowl and whisk a little bit.
Pour 1/3 of the sauce on the bottom of a baking dish. Place the drained cauliflower on top and then spread the rest of the sauce evenly on top. Bake for 25 to 30 minutes, until the top is browned.
Brown sausages on the frying pan. Serve together with cauliflower casserole.
