Classic Cauliflower au Gratin

Preheat oven to 350 degrees F (175 degrees C).

Bring a large pot of water to a boil. Add cauliflower and cook uncovered until tender about 10 minutes. Drain.

Combine sour cream Cheddar cheese onion melted butter red pepper flakes and salt in a baking dish. Mix in cauliflower. Sprinkle bread crumbs on top.

Bake in the preheated oven until bubbly and cheese is melted about 30 minutes.