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Thanksgiving Cauliflower Casserole with golden cheese topping

Thanksgiving Cauliflower Casserole

This rich, cheesy Thanksgiving Cauliflower Casserole is the perfect holiday side dish, creamy on the inside, golden and crisp on top. A lighter alternative to potato casseroles, it delivers festive comfort and indulgent flavor in every bite.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Side Dish
Cuisine: American
Calories: 290
Ingredients Equipment Method Notes

Ingredients
  

Main Ingredients
  • 1 large head cauliflower cut into florets (about 6 cups)
  • 4 tbsp unsalted butter
  • 2 tbsp all-purpose flour
  • 1 1/2 cups whole milk
  • 1/2 cup heavy cream
  • 1 1/2 cups sharp cheddar cheese shredded
  • 1/2 cup parmesan cheese grated
  • 2 cloves garlic minced
  • 1 tsp Dijon mustard
  • salt and pepper to taste
Topping
  • 3/4 cup breadcrumbs or crushed crackers
  • 1 tbsp butter melted
  • 1/4 cup parmesan cheese for topping
  • fresh parsley or thyme chopped, for garnish

Equipment

  • Oven
  • 9x13-inch Casserole Dish
  • Large Saucepan
  • Mixing bowls
  • Whisk

Method
 

  1. Preheat oven to 375°F (190°C). Lightly grease a 9x13-inch casserole dish.
  2. Cut cauliflower into medium florets. Steam, boil, or roast until just fork-tender. Drain and pat dry.
  3. In a saucepan, melt butter over medium heat. Add flour and whisk for 1–2 minutes to make a roux.
  4. Gradually whisk in milk and cream. Cook until slightly thickened, 3–4 minutes. Stir in garlic, Dijon, salt, and pepper.
  5. Remove from heat. Stir in cheddar and parmesan until smooth and melted.
  6. Place cauliflower in prepared casserole dish. Pour cheese sauce evenly over the top.
  7. In a bowl, mix breadcrumbs with melted butter and remaining parmesan. Sprinkle over casserole.
  8. Bake uncovered for 25–30 minutes or until bubbly and golden. Broil 2–3 minutes if needed for extra crispness.
  9. Let rest for 10 minutes before serving. Garnish with fresh herbs.

Notes

This casserole can be made ahead and stored in the fridge overnight before baking. For extra flavor, add bacon, caramelized onions, or a pinch of smoked paprika.