Introduction
If you are looking for a delicious and comforting dish that’s easy to make, a Cheesy Root Vegetable Gratin is the perfect choice. This dish combines a mix of hearty root vegetables with a rich, cheesy sauce that melts beautifully in the oven. It’s a perfect side for dinner or even a main dish if you want something filling but light.
The best part? This recipe is simple, uses everyday ingredients, and can be ready in less than an hour. Even if you’re not an experienced cook, you’ll find it easy to follow. In this guide, we’ll go through all the ingredients you need, a step-by-step process, and even nutritional information. By the end, you’ll have a perfect gratin ready to impress!
Ingredients – Cheesy Root Vegetable Gratin
Here’s what you’ll need for this recipe. The measurements serve about 4-6 people.
Vegetables:
- 2 medium potatoes, peeled and thinly sliced
- 2 medium carrots, peeled and thinly sliced
- 1 medium parsnip, peeled and thinly sliced
- 1 small sweet potato, peeled and thinly sliced
- 1 small onion, thinly sliced
Cheese & Dairy:
- 1 cup grated cheddar cheese
- ½ cup grated parmesan cheese
- 1 ½ cups heavy cream (or full-fat milk for a lighter version)
- 2 tablespoons butter
- 1 teaspoon mustard (optional, for extra flavor)
Seasonings:
- 1 teaspoon garlic powder
- Salt to taste
- Black pepper to taste
- A pinch of nutmeg (optional, adds warmth)
- Fresh parsley, chopped (for garnish)
Other:
- 1 tablespoon flour (to thicken the sauce)

Step by Step Process – Cheesy Root Vegetable Gratin
Step 1: Preheat the Oven
Start by preheating your oven to 180°C (350°F). Grease a medium-sized baking dish with butter to prevent sticking.
Step 2: Prepare the Vegetables
Wash, peel, and slice all your vegetables thinly. Thin slices allow them to cook evenly and soak up all the creamy cheese sauce.
Step 3: Make the Cheese Sauce
- In a small saucepan, melt the butter over medium heat.
- Add flour and whisk for 1-2 minutes to make a light roux.
- Gradually pour in cream while stirring continuously to avoid lumps.
- Add cheddar cheese, mustard, garlic powder, salt, pepper, and nutmeg.
- Stir until the cheese melts completely and the sauce is smooth and creamy.
Step 4: Layer the Vegetables
- Arrange a layer of potatoes at the bottom of the baking dish.
- Add a layer of carrots, parsnip, sweet potato, and onion on top.
- Pour a portion of the cheese sauce over the vegetables.
- Repeat the layers until all vegetables are used, finishing with a layer of sauce on top.
- Sprinkle parmesan cheese evenly over the top layer for a crispy golden crust.
Step 5: Bake the Gratin
Place the dish in the preheated oven and bake for 35-40 minutes, or until the vegetables are tender and the top is golden brown. You can check the tenderness by inserting a fork; it should slide in easily.
Step 6: Garnish and Serve
Remove the gratin from the oven and let it cool for 5 minutes. Sprinkle with freshly chopped parsley for a fresh touch. Serve warm as a side or enjoy it as a main dish.
Nutritional Information
| Nutrient | Amount per Serving |
|---|---|
| Calories | 280 kcal |
| Protein | 10 g |
| Fat | 18 g |
| Saturated Fat | 10 g |
| Carbohydrates | 22 g |
| Fiber | 4 g |
| Sugar | 5 g |
| Sodium | 450 mg |
| Calcium | 220 mg |
| Vitamin A | 2500 IU |

Frequently Asked Questions
1. Can I use other vegetables?
Yes! You can include rutabaga, turnip, or zucchini if you like. Just make sure to slice them thinly for even cooking.
2. Can I make this recipe ahead of time?
Absolutely. You can assemble the gratin a few hours ahead and refrigerate it. Bake it fresh just before serving.
3. Can I use a different cheese?
Yes, mozzarella, gruyere, or fontina work wonderfully. Mix cheeses for a richer flavor.
4. Is it possible to make this dish lighter?
Use milk instead of heavy cream and reduce the amount of cheese slightly. You can also skip the butter.
5. How can I make it gluten-free?
Use a gluten-free flour or cornstarch to thicken the sauce.
6. Can this be frozen?
Yes, freeze before baking. Thaw in the fridge overnight and bake as instructed.
Final Thoughts
The Quick Cheesy Root Vegetable Gratin is a dish that is simple, comforting, and full of flavor. It’s perfect for family dinners, special occasions, or even when you want a cozy meal without too much hassle. The creamy, cheesy sauce pairs perfectly with the earthy taste of root vegetables, making each bite satisfying.
With its easy steps and flexible ingredients, this recipe is beginner-friendly and forgiving. You can swap vegetables, adjust the cheese, or even make it lighter based on your preference. And the best part? It looks beautiful on the table, making it as impressive visually as it is tasty.
Next time you want a warm, cheesy dish that everyone will love, give this Cheesy Root Vegetable Gratin a try. Your family and friends will thank you for it!

