This cauliflower casserole is a simple mixture of cauliflower, chopped onion and peppers, and a basic cheddar cheese sauce. Top the casserole with buttered bread crumbs or crumbled French fried onions for a satisfying crunch in every bite. It’s an excellent side dish for a holiday meal or family dinner.

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Cheesy Cauliflower Casserole

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This cheesy cauliflower casserole is topped with buttery bread crumbs or crumbled French fried onions for a satisfying crunch in every bite.

  • Author: Diana Rattray
  • Prep Time: 10 minutes
  • Cook Time: 45 minutes
  • Total Time: 55 minutes
  • Yield: 4 servings 1x
  • Category: Casserole, Side Dish, Cauliflower
  • Method: Bake

Ingredients

Scale
  • 1 head cauliflower
  • 1 large green bell pepper, chopped
  • 1 large onion, chopped
  • 1/2 teaspoon salt, plus more, to taste
  • 3 to 4 tablespoons butter (divided use)
  • 3 tablespoons flour
  • 1 1/2 cups milk
  • 1 cup shredded Cheddar cheese (divided use)
  • freshly ground black pepper, to taste
  • 1/2 cup crumbled French fried onions or soft bread crumbs

Instructions

  1. Heat the oven to 350 F.
  2. Butter a 1 1/2-quart baking dish.
  3. Trim cauliflower and separate into florets. Discard any leaves and tough stems.
  4. In a saucepan. combine cauliflower with peppers and onion; cover with water and add 1/2 teaspoon of salt. Bring to a boil; cover and cook for about 10 to 12 minutes, or until the cauliflower is tender
  5. In another saucepan; melt butter over medium-low heat. Stir in flour and stir until smooth and bubbly. Gradually add milk, stirring constantly. Continue cooking and stirring until thickened. Stir in 1/2 cup of the cheese.
  6. Pour sauce over cauliflower and transfer to a lightly buttered 1 1/2-quart baking dish.
  7. Top with buttered bread crumbs or French fried onions. Bake for about 30 minutes.
  8. Sprinkle with remaining cheese for the last 5 minutes of baking time.

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