It seems to me that most people I meet have a somewhat political idea of cauliflower. Usually this is due to some mum who never knew how to cook it proparly. Cauliflower eats salt! You need to add salt to the water! Second, many overcook it. Boil it about 10 minutes, then put a knife in the thickest part and if it's soft enough, it's done.
Hamburgers. Now, everybody knows that meat balls are Swedish. But other forms of the same meat ball have other names. The oval form of the (today's) classic Hamburger is called: "Pan Beef".
Hamburger Cauliflower is simply cauliflower with white Bechamel sauce, potatoes and pan beef.
Start to fry the slices onions. Later put the pan beefs in the pan. (Add salt and pepper to the hamburger meat before you form the pan beefs).
Make the Bechamel sauce - a simple white sauce. Pour over the done cauliflower.