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Creamy winter vegetable casserole baked with broccoli, cauliflower, carrots, and a cheesy sauce, served hot in a rustic dish.

Creamy Winter Vegetable Casserole – Easy Comfort Food Dinner Recipe

Creamy winter vegetable casserole is the ultimate cozy dish for cold nights! Fresh seasonal vegetables like broccoli, cauliflower, and carrots are baked in a rich, cheesy sauce until golden and bubbly. Perfect for family dinners, holiday gatherings, or potlucks when you want a hearty, comforting recipe.
Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Course Main Dish, Side Dish
Cuisine American / Comfort Food, European-inspired
Servings 6
Calories 280 kcal

Equipment

  • Large baking dish
  • Saucepan
  • Mixing bowls
  • Whisk
  • Cutting board & knife

Ingredients
  

  • 2 carrots, peeled and chopped
  • 2 parsnips, peeled and chopped
  • 1 small cauliflower, cut into florets
  • 2 tbsp olive oil
  • 3 tbsp butter
  • 3 tbsp flour
  • 2 cups milk
  • 1 cup grated Gruyère or cheddar cheese
  • 1 tsp thyme
  • 1 tsp rosemary
  • Salt & pepper to taste
  • 1 cup breadcrumbs mixed with 2 tbsp melted butter

Instructions
 

  • Roast Vegetables: Toss carrots, parsnips, and cauliflower with olive oil, salt, and pepper. Roast at 400°F (200°C) for 20–25 minutes until tender.
  • Make Sauce: In a saucepan, melt butter. Whisk in flour to form a roux. Slowly add milk, whisking until thickened. Stir in cheese, thyme, and rosemary. Season to taste.
  • Assemble Casserole: Place roasted vegetables in a greased baking dish. Pour sauce evenly over them.
  • Add Topping: Sprinkle breadcrumb mixture (and extra cheese if desired) over the top.
  • Bake: Bake at 375°F (190°C) for 25–30 minutes until golden and bubbling.
  • Rest & Serve: Let casserole rest for 10 minutes before serving.

Notes

  • Roast vegetables first for caramelized flavor.
  •  Taste sauce before baking to ensure seasoning is balanced.
  •  Add lemon zest for brightness.
  •  Swap breadcrumbs for almond flour to make gluten-free.
  •  Freeze unbaked casserole for up to 2 months.
Keyword cheesy casserole, creamy gratin, Holiday side dish, roasted vegetable bake, winter vegetable casserole