In a large pot of water, boil the cauliflower for 3 minutes, then throw in the gnocchi. Cook for 2 more minutes or until the gnocchi floats, then turn the burner off and strain everything.
Put the cauliflower and gnocchi back in the hot pot and stir in 3/4 cup of the Parmesan cheese plus the butter, olive oil, several grinds of black pepper and a few pinches of kosher salt until the flavor pops.
Spread the mixture into an 8 x 8-inch casserole dish. Sprinkle the remaining 1/4 cup Parmesan cheese on top, plus a bit more salt and pepper.