This Root Vegetable Au Gratin is a delightful and colorful twist on the classic dish, offering a medley of flavors that are perfect for any gathering. With layers of Yukon gold potatoes, sweet potatoes, and beets, this recipe not only pleases the palate but also serves as a stunning centerpiece. Whether you’re hosting a family dinner or looking for a unique side dish for holiday celebrations, this au gratin will impress everyone at the table.
Why You’ll Love This Recipe
- Easy to Prepare: With simple steps and readily available ingredients, this recipe comes together effortlessly.
- Flavorful Layers: The combination of creamy cheese sauce with earthy root vegetables creates a delicious harmony of flavors.
- Versatile Dish: Perfect as a side or main course, it pairs well with various proteins or can stand alone as a vegetarian option.
- Beautiful Presentation: The vibrant colors of sweet potatoes, beets, and Yukon gold potatoes make for an eye-catching dish.
- Comfort Food: This hearty recipe delivers that satisfying warmth and comfort everyone craves.
Tools and Preparation
To create your Root Vegetable Au Gratin, having the right tools is essential. They not only simplify the process but also enhance efficiency in the kitchen.
Essential Tools and Equipment
- Cast iron skillet or baking dish
- Mandolin slicer (optional)
- Saucepan
- Whisk
- Wooden spoon
Importance of Each Tool
- Cast iron skillet or baking dish: Provides even heat distribution and helps achieve that perfect golden crust on top.
- Mandolin slicer (optional): Ensures uniform slices for even cooking and enhances the visual appeal of your dish.
- Saucepan: Perfect for making the cheese sauce; its sturdy construction allows for even heating without burning.
- Whisk: Helps in achieving a smooth cheese sauce by thoroughly mixing ingredients without lumps.

Ingredients
This Root Vegetable Au Gratin is both beautiful and delicious, featuring an array of vibrant vegetables.
For the Vegetables
- 2 large Yukon potatoes
- 2 medium sweet potatoes
- 2 medium beets
- 1 onion
For the Cheese Sauce
- 1/4 cup butter
- 1/4 cup flour
- 1 tbsp dijon mustard
- 2 cups milk
- 2 cups sharp cheddar cheese (shredded)
- 1/2 cup parmesan cheese (grated)
How to Make Root Vegetable Au Gratin
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). This step is crucial for ensuring even cooking throughout your au gratin.
Step 2: Prepare the Vegetables
- Peel and thinly slice the Yukon potatoes, sweet potatoes, beets, and onion. Using a mandolin can make slicing easier and more uniform.
Step 3: Make the Cheese Sauce
- In a saucepan, melt the butter.
- Once melted, stir in the flour, cooking over medium heat for about 1-2 minutes until combined.
- Gradually add in the milk, stirring constantly until thickened enough to coat the back of a wooden spoon.
- Mix in the shredded cheddar cheese and dijon mustard. Stir until the cheese has completely melted, then set aside.
Step 4: Assemble the Dish
- In a cast iron skillet or baking dish, start by adding a thin layer of sliced onions at the bottom.
- Arrange slices of Yukon potatoes, sweet potatoes, and beets vertically within the dish.
- Sprinkle additional thinly cut onions between layers or on top of all vegetables.
Step 5: Add Cheese Sauce and Bake
- Pour your creamy cheese sauce over the layered vegetables, ensuring it’s evenly distributed.
- Sprinkle grated parmesan cheese on top for added flavor and texture.
- Cover with foil and bake in your preheated oven for 30 minutes.
- After that time, remove the foil and continue baking for an additional 20-30 minutes until bubbly and golden brown.
Enjoy your delicious Root Vegetable Au Gratin!
How to Serve Root Vegetable Au Gratin
Root Vegetable Au Gratin is a versatile dish that can be served in various ways to enhance your meal. Its creamy texture and vibrant colors make it an attractive addition to any table. Here are some serving suggestions to elevate your dining experience.
As a Main Dish
- Pair with a light salad for a satisfying main course. A simple green salad with a vinaigrette complements the richness of the au gratin.
With Protein
- Serve alongside grilled chicken or turkey. The savory flavors of the meat balance well with the sweetness of the root vegetables.
Accompanied by Bread
- Offer crusty bread on the side. A warm baguette or rustic loaf can be perfect for scooping up the cheesy goodness.
With Seasonal Vegetables
- Add steamed or roasted seasonal vegetables for a colorful plate. Choose veggies like broccoli or asparagus to add freshness.
How to Perfect Root Vegetable Au Gratin
Creating the perfect Root Vegetable Au Gratin involves some key techniques. Here are some tips to ensure your dish turns out beautifully every time.
- Use fresh ingredients: Fresh root vegetables will provide better flavor and texture than older ones.
- Slice evenly: Ensure all vegetables are sliced uniformly for even cooking and presentation.
- Don’t rush the cheese sauce: Allow time for the cheese to melt thoroughly in the sauce for a creamy consistency.
- Layer wisely: Alternate layers of potatoes and beets, ensuring every bite has balanced flavors.
- Let it rest: After baking, let your dish sit for about 10 minutes before serving. This helps it set and makes serving easier.
Best Side Dishes for Root Vegetable Au Gratin
Root Vegetable Au Gratin pairs wonderfully with a variety of side dishes that complement its rich flavors. Consider these options to complete your meal.
- Simple Green Salad: A mix of greens with cherry tomatoes and a light dressing enhances freshness.
- Grilled Asparagus: Lightly seasoned and grilled asparagus adds a smoky element that contrasts nicely with the creaminess.
- Steamed Broccoli: Bright green broccoli brings color to your plate and provides a healthy crunch.
- Roasted Brussels Sprouts: Caramelized Brussels sprouts add depth and an earthy flavor that pairs well with the gratin.
- Garlic Bread: Crunchy garlic bread offers a satisfying texture and flavor that complements cheesy dishes.
- Quinoa Salad: A fluffy quinoa salad with herbs and citrus can brighten up your meal while adding protein.
- Crispy Kale Chips: These provide a light, crunchy contrast to the soft textures of the au gratin.
- Herbed Rice Pilaf: Fluffy rice pilaf with herbs offers an aromatic base that supports the robust flavors of your main dish.
Common Mistakes to Avoid
When making Root Vegetable Au Gratin, it’s easy to make a few common mistakes. Avoid these pitfalls for the best results.
- Not Slicing Evenly: Ensure you slice your vegetables uniformly. Uneven slices can lead to inconsistent cooking, making some parts undercooked while others are overdone.
- Skipping the Cheese Sauce: Don’t skip making the cheese sauce. It adds flavor and creaminess to the dish, enhancing the overall taste of the au gratin.
- Using Low-Quality Cheese: Always opt for good quality cheese. Using pre-shredded cheese may contain anti-caking agents that affect melting, so buy blocks and shred them yourself for the best texture.
- Overbaking or Undercooking: Pay attention to baking times. Overbaking can dry out the dish while undercooking can leave vegetables hard. Follow timings closely and check for doneness.
- Neglecting Layering: Proper layering is key in a Root Vegetable Au Gratin. Don’t just dump all ingredients together; layer them nicely for even cooking and presentation.
Storage & Reheating Instructions
Refrigerator Storage
- Store leftovers in an airtight container.
- Consume within 3-5 days for optimal freshness.
Freezing Root Vegetable Au Gratin
- Use a freezer-safe container or heavy-duty aluminum foil.
- Can be frozen for up to 3 months; make sure to label with date.
Reheating Root Vegetable Au Gratin
- Oven: Preheat to 350°F (175°C) and cover with foil to prevent drying out. Heat for about 20 minutes or until warmed through.
- Microwave: Place a portion in a microwave-safe dish, cover loosely, and heat on medium power for about 2-3 minutes or until hot.
- Stovetop: Heat on low in a skillet, stirring occasionally until heated through. Add a splash of milk if it looks dry.
Frequently Asked Questions
Here are some common questions regarding Root Vegetable Au Gratin that might help you in your culinary journey.
Can I use other root vegetables in my Root Vegetable Au Gratin?
Absolutely! Feel free to experiment with other root vegetables like parsnips or turnips for different flavors and textures.
How can I make my Root Vegetable Au Gratin healthier?
You can substitute some of the cheese with nutritional yeast or use a lower-fat milk alternative to reduce calories while maintaining flavor.
Can I prepare Root Vegetable Au Gratin ahead of time?
Yes! You can assemble it ahead of time and refrigerate until ready to bake. Just add extra baking time if baking from cold.
What should I serve with Root Vegetable Au Gratin?
This dish pairs well with roasted meats or a fresh salad. It’s hearty enough to be enjoyed as a main course too!
Final Thoughts
Root Vegetable Au Gratin is not only visually appealing but also versatile, making it perfect for any occasion. Customize it with your favorite root vegetables or add different cheeses to suit your taste. Give this recipe a try, and enjoy a delicious twist on classic comfort food!
Root Vegetable Au Gratin
Indulge in the vibrant flavors of Root Vegetable Au Gratin, a delightful twist on the classic dish that showcases a medley of colorful root vegetables. This creamy and cheesy bake features layers of Yukon gold potatoes, sweet potatoes, and beets, creating an eye-catching centerpiece for any gathering. Perfect for family dinners or special occasions, this dish is sure to impress with its rich flavors and hearty texture. Easy to prepare and versatile enough to serve as a side or main course, this au gratin will warm your heart and satisfy your taste buds.
- Prep Time: 20 minutes
- Cook Time: 60 minutes
- Total Time: 1 hour 20 minutes
- Yield: Serves approximately 8
- Category: Side Dish
- Method: Baking
- Cuisine: American
Ingredients
- 2 large Yukon potatoes
- 2 medium sweet potatoes
- 2 medium beets
- 1 onion
- 1/4 cup butter
- 1/4 cup flour
- 1 tbsp Dijon mustard
- 2 cups milk
- 2 cups sharp cheddar cheese (shredded)
- 1/2 cup parmesan cheese (grated)
Instructions
- Preheat the oven to 350°F (175°C).
- Peel and thinly slice the Yukon potatoes, sweet potatoes, beets, and onion.
- In a saucepan, melt the butter over medium heat. Stir in the flour and cook for 1-2 minutes.
- Gradually add milk, stirring until thickened. Mix in the cheddar cheese and Dijon mustard until melted.
- In a baking dish, layer sliced onions at the bottom, followed by alternating layers of Yukon potatoes, sweet potatoes, and beets.
- Pour cheese sauce over the layered vegetables and sprinkle with parmesan cheese.
- Cover with foil and bake for 30 minutes. Remove foil and bake for an additional 20-30 minutes until bubbly and golden brown.
Nutrition
- Serving Size: 1 serving
- Calories: 285
- Sugar: 5g
- Sodium: 450mg
- Fat: 14g
- Saturated Fat: 8g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 36g
- Fiber: 5g
- Protein: 8g
- Cholesterol: 40mg



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