Creamy Winter Vegetable Casserole
A creamy, comforting winter vegetable casserole featuring seasonal root vegetables and hearty greens in a rich, velvety sauce topped with melted Gruyere cheese. Perfect as a wholesome weeknight dinner or festive side dish that blends simplicity, warmth, and nourishing flavors.
- Author: Lina
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
- Yield: 6 servings 1x
- Category: Appetizers
- Method: Baking
- Cuisine: American
- Diet: Gluten Free
Vegetables
- 2 carrots, peeled and chopped
- 2 parsnips, peeled and chopped
- 2 cups Brussels sprouts, trimmed and halved
- 2 medium potatoes, peeled and chopped
Creamy Sauce
- 3 tablespoons butter
- 1 medium onion, finely chopped
- 2 cloves garlic, minced
- 3 tablespoons all-purpose flour (or gluten-free flour blend)
- 2 ½ cups heavy cream
- 1 teaspoon fresh thyme leaves
- Salt and black pepper, to taste
Cheese Topping
- 1 ½ cups shredded Gruyere cheese
- Prepare the Vegetables: Peel and chop the carrots, parsnips, and potatoes into bite-sized pieces. Trim and halve the Brussels sprouts. Blanch all vegetables in boiling salted water for about 5 minutes to slightly soften while retaining some bite. Drain and set aside.
- Make the Creamy Sauce: Melt butter in a large saucepan over medium heat. Sauté finely chopped onion and garlic until translucent and fragrant. Sprinkle in flour and stir continuously for 1-2 minutes to cook out raw flour taste and form a roux. Gradually whisk in heavy cream and cook until thickened into a smooth sauce. Season with salt, pepper, and fresh thyme leaves.
- Combine Vegetables and Sauce: Gently fold the blanched vegetables into the creamy sauce, ensuring even coating. Taste and adjust seasoning. Transfer mixture into a greased casserole dish and spread evenly.
- Add Cheese and Bake: Top the casserole with shredded Gruyere cheese in a generous, even layer. Bake in a preheated oven at 375°F (190°C) for 25-30 minutes until the top bubbles and turns golden brown.
- Rest and Serve: Let the casserole cool for 5-10 minutes after baking to thicken the sauce further. Scoop onto plates and enjoy warm.
Notes
- Blanch vegetables briefly to avoid sogginess after baking.
- Use fresh herbs like thyme and rosemary for brighter flavors.
- Gruyere cheese melts beautifully; alternatively mix with Parmesan or mozzarella.
- Cook the roux carefully to ensure a smooth, thick sauce.
- For a lighter casserole, replace half the cream with milk or vegetable broth.
Nutrition
- Serving Size: 1 cup
- Calories: 320
- Sugar: 5g
- Sodium: 360mg
- Fat: 24g
- Saturated Fat: 15g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 20g
- Fiber: 4g
- Protein: 8g
- Cholesterol: 75mg
Keywords: winter vegetable casserole, creamy vegetable casserole, Gruyere casserole, seasonal winter recipe, vegetarian casserole, comfort food