Okay so I know that this picture does not do this yummy dish any justice! But this is very tasty!!
Take a head of cauliflower and boil for 20 minutes. Drain from water and place in pan. Spread a 50/50 mixture of mayo and mustard atop the head of cauliflower. Then sprinkle with some parm cheese. Bake in oven for around 10-15 minutes at 350. Heat just until top begins to brown and become crunchy! enjoy!