For a richer flavor, consider using Gruyère or Comté cheese in addition to, or in place of, the Parmigiano-Reggiano. A mandoline slicer can be helpful for achieving uniform vegetable slices. Feel free to experiment with different root vegetables, such as carrots or sweet potatoes.
Chef John's Root Vegetable Gratin
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PREP TIME20 mins
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COOK TIME1 hrs 20 mins
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TOTAL TIME2 hrs
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SERVING6 People
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VIEWS60
Elevate your root vegetables with this decadent gratin, where thinly sliced roots are layered in a creamy, aromatic sauce and baked to golden perfection. A touch of Parmesan adds a delightful nutty finish.
Ingridients
Adjust Servings
Nutrition
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Carbohydrate25 g
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Cholesterol69 mg
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Fiber5 g
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Protein6 g
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Saturated Fat13 g
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Sodium448 mg
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Sugar6 g
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Fat22 g
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Unsaturated Fat0 g
Follow The Directions
01
Step
0 mins
Preheat the oven to 375 degrees F (190 degrees C).
02
Step
3 mins
Bring a large pot of generously salted water to a boil. Add the vegetables, and cook uncovered for 3 minutes. Drain in a colander, then immediately immerse in ice water for several minutes until cold to stop the cooking process. Once the vegetables are cold, drain well, and set aside.
03
Step
3 mins
Cook garlic and butter in a large skillet over medium heat until garlic starts sizzling, about 3 minutes.
04
Step
5 mins
Stir in chicken broth, heavy cream, thyme, nutmeg, and cayenne pepper; cook until mixture begins to simmer, about 5 minutes.
05
Step
0 mins
Coat a 9x13-inch baking dish with olive oil and spread vegetables evenly over the oil.
06
Step
0 mins
Pour broth and cream mixture over vegetables and top with half of the grated Parmigiano-Reggiano cheese.
07
Step
40 mins
Cover baking dish loosely with aluminum foil, place on a baking sheet, and bake in the preheated oven for 40 minutes.
08
Step
30 mins
Remove baking dish from the oven and top with remaining Parmigiano-Reggiano. Bake uncovered until vegetables are browned, bubbling, and tender, about an additional 30 minutes.
09
Step
20 mins
Remove from the oven and let rest for 20 minutes.
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Please Rate
Damon Donnelly
Jun 9, 2025I appreciate the tip about using a mandoline. It saved me so much time!
Drew Douglas
May 19, 2025I substituted the chicken broth with vegetable broth to make it vegetarian, and it was still delicious.
Mariana Heathcote
Apr 9, 2025I made this for Thanksgiving and it was a huge hit! Everyone loved it.
Cleora West
Jan 27, 2025This gratin is so easy to make and tastes amazing. My family requests it all the time.
Felipa Swaniawski
Sep 20, 2024The combination of root vegetables and creamy sauce is perfect. I'll definitely be making this again.