Casseroles Sides Uncategorized Vegetarian

Pumpkin & Garnet Yam Gratin

    Pumpkin - Yam Gratin with Thyme & Gruyére
    Pumpkin - Yam Gratin with Thyme & Gruyére

    Day 18 of 31 days of pumpkin and I’ve decided to bring one of my favorite potato recipes into the world of pumpkin. The dish? Gratin Dauphinois or Potatoes Gratin. Thinly sliced potatoes baked in cream and Gruyére cheese. Surely pumpkin can adapt, but not on its own and so I’ve paired it with Garnet yams. One of my inspirations cooking this dish with pumpkins and yams comes from the fact that I always add a little nutmeg to dishes with melted Gruyére, like macaroni and cheese. It’s not a far jump from nutmeg to pumpkin, so I thought, maybe pumpkin and yams will stand up to the creamy cheesy sauce that is a gratin. I was right. This dish is great for confronting October’s chill.

    Everything I know about Gratin Dauphinois, I learned from Jacques Pépin and his book, Chez Jacques Deluxe Edition: Traditions and Rituals of a Cook Awhile back, I did a blog post called, Gratin Dauphinois of Potatoes, Jerusalem Artichokes (Sunchokes) and Leeks. If you’re going to get serious about making Potatoes Gratin at home, it’s worth investing in a mandoline. I purchased a simple one for under $40 that I like, but it doesn’t do really fancy cuts like waffle cuts. It is available at Amazon.

    Pumpkin and Yam Slices in Le Creuset Pot
    Pumpkin and Yam Slices in Le Creuset Pot

    Pumpkin-Yam Gratin
    Serves 6-8


    3 Tbsp butter
    3/4 cups diced shallots
    1/2 tsp dried sage
    1/2 tsp dried thyme
    1 tsp salt
    1.5 lbs fresh pumpkin, sliced into 2 inch squares that are about 1/2 inch thick
    1.5 lbs thinly sliced Garnet yams
    4 cups whole milk
    1 cup heavy whipping cream
    3/4 cup shredded Gruyère cheese
    2 Tbsp grated Parmesan cheese


    1. Preheat the oven to 425˚F.

    2. Melt the butter in an oven proof dish, like a gratin dish or a Le Creuset Oval French Oven

    Add the shallots and sautée them gently until they sweat out some of their moisture.

    3. Add sage and thyme and sautée until fragrant, about one minute. Add the yams and the pumpkin slices, salt and pepper. Toss yams and pumpkin to coat with butter, shallots and herbs. Add milk and cream until just about covering the yams and pumpkin. Bring milk just to a boil. Simmer for 2-3 minutes. Sprinkle mixture with Gruyére cheese and then top with Parmesan. Bake for 1 hour. Check periodically to make sure that the cheese doesn’t burn.

    3. Once the gratin is removed from the oven, let it cool for at least 15 minutes before serving. Flavors will meld and consistency of cream/cheese sauce will be just right.

    Pumpkin-Yam Gratin
    Pumpkin-Yam Gratin
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      3 replies on “Pumpkin & Garnet Yam Gratin”

      I’m trying to cook more season dishes and thought the ingredients in this were wonderful. Were you suppose to cover this while cooking? I covered it (since the French oven photo had the lid on and the recipe didn’t specify). Mine didn’t turn out anything like your photo. Mine was watery and the cheese looked curdled in small curdling clumps, but still delicious. I’ll try it again sometime, maybe I’ll try cooking it uncovered and see how it turns out.

      I’m sorry I wasn’t explicit about leaving it uncovered, but yes, it should bake uncovered. If you try it again, it’s delicious with just potatoes too. Yukon Gold potatoes are best for this and less watery than pumpkin, so between leaving it uncovered and using just potatoes your chances of avoiding a watery texture are very high! Also, use heavy whipping cream to ensure that the cheese will melt into it and thicken rather than getting glumpy. Best wishes, Amy of StreamingGourmet

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