Celeriac Dauphinoise: A Creamy, Flavorful Potato Gratin

Introduction:
Celeriac dauphinoise is a delectable gratin dish that elevates the humble celeriac to a new level of culinary delight. This creamy, cheesy casserole is a versatile side dish that pairs well with a variety of main courses.

Ingredients:
- 1 large celeriac, peeled and sliced thinly
- 2 cups heavy cream
- 1 cup milk
- 1/4 cup grated Parmesan cheese
- 1/4 cup grated Gruyère cheese
- 1/4 cup chopped fresh thyme
- 1/4 cup chopped fresh parsley
- Salt and pepper to taste

Instructions:
1. Preheat oven to 375°F (190°C).
2. In a large bowl, combine the sliced celeriac, heavy cream, milk, Parmesan cheese, Gruyère cheese, thyme, parsley, salt, and pepper. Mix well.
3. Transfer the mixture to a greased 9x13 inch baking dish.
4. Bake for 45-50 minutes, or until the celeriac is tender and the top is golden brown.
5. Let cool for 10 minutes before serving.

Tips:
- For a richer flavor, use crème fraîche instead of heavy cream.
- Add a dash of nutmeg or grated garlic to enhance the seasonings.
- If you don't have fresh herbs, use 1 tablespoon of dried thyme and 1 tablespoon of dried parsley.
- Serve with roasted chicken, fish, or beef for a complete meal.

Health Benefits:
Celeriac is a nutrient-rich vegetable that offers several health benefits:
- High in dietary fiber, which promotes digestive health and helps regulate blood sugar levels.
- Contains potassium, which is essential for maintaining healthy blood pressure.
- Rich in vitamin C, an antioxidant that supports immune function.

Conclusion:
Celeriac dauphinoise is an exquisite and easy-to-make dish that is sure to impress your family and guests. Its creamy texture, flavorful ingredients, and nutritional benefits make it a perfect choice for any occasion. Whether you're serving it as a side dish or as a vegetarian main course, this delightful gratin is guaranteed to leave you satisfied.