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A spoon serving up a portion of cauliflower casserole.

Cauliflower Casserole

This cauliflower casserole is cooked cauliflower florets tossed in a homemade cheese sauce, then mixed with bacon and green onions and baked to golden brown perfection. A hearty side dish that pairs well with chicken, pork and beef.
Course Side
Cuisine American
Prep Time 20 minutes
40 minutes
Total Time 1 hour
Servings 8
Calories 336kcal
Author Sara Welch


  • 6 cups cauliflower florets cooked
  • 3 tablespoons butter
  • 1 tablespoon garlic minced
  • 3 tablespoons all purpose flour
  • 2 cups milk I use whole milk
  • salt and pepper to taste
  • 1/2 cup parmesan cheese grated
  • 2 1/2 cups shredded cheddar cheese divided use
  • 8 slices bacon cooked and crumbled, plus more for garnish
  • 1/4 cup green onions sliced, plus more for garnish
  • cooking spray


  • Preheat the oven to 375 degrees F. Coat a 3 quart baking dish with cooking spray.
  • Melt the butter over medium heat in a large pan. Add the garlic and cook for 30 seconds.
  • Add the flour and cook for 1 minute, stirring constantly.
  • Gradually add in the milk, whisking constantly. Season with salt and pepper to taste, then bring the milk mixture to a simmer.
  • Cook for 4-5 minutes, stirring occasionally, or until thickened. Stir in the parmesan cheese and 1 1/2 cups of cheddar cheese.
  • Add the cauliflower to the cheese sauce and toss to coat. Stir in the bacon and green onions.
  • Pour the cauliflower mixture into the prepared baking dish and top with remaining cup of cheddar cheese.
  • Bake for 25-30 minutes or until casserole is bubbly and cheese is melted. Let stand for 5 minutes, then serve, garnished with additional bacon and green onions as desired.



Calories: 336kcal | Carbohydrates: 10g | Protein: 16g | Fat: 20g | Saturated Fat: 14g | Cholesterol: 66mg | Sodium: 508mg | Potassium: 390mg | Fiber: 2g | Sugar: 5g | Vitamin A: 601IU | Vitamin C: 37mg | Calcium: 368mg | Iron: 1mg