Gather everything and preheat your oven to 350℉
Wash and chop your cauliflower. Place cauliflower into a pot and bring to boil, then, allow to simmer for about 12-15 minutes or until soft.
Strain the cauliflower and place into bowl, then mash with a fork or a potato masher
Add your cheese, 6 tbsps of butter, and Montreal steak seasoning, mix until combined
Butter a 9×13 baking dish. Pour cauliflower mixture into the dish evenly. Set aside
Melt 2 tbsps of butter and mix bread crumbs into it. Sprinkle over the cauliflower dish. Bake for about 45 minutes or until it gets golden on top. Serve warm.