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    Home » Side Dishes » Provolone, Mushroom and Potato Gratin

    Published: Oct 13, 2014 · Modified: Feb 1, 2021 by Lisa · This post may contain affiliate links, which means we make a small commission off items you purchase at no additional cost to you.

    Provolone, Mushroom and Potato Gratin

    Jump to Recipe Print Recipe

    Cheesy potatoes get a whole new look with the addition of Provolone cheese, Portobello mushrooms, and fresh thyme to this potato gratin recipe. 

    white gratin dish filled with a  provolone, mushroom and potato gratin recipe. It is on a dark brown background. this recipe

    Au gratin potatoes don't get the love they should so I gave them an update and made this Provolone, Mushroom and Potato Gratin recipe. It uses lots of provolone cheese and fresh thyme and it’s my newest crave-worthy side dish.

    Provolone, Mushroom and Potato Gratin in a white gratin baking dish.

    And you're probably wondering, what even is a gratin?

    Simply put, a gratin is a French dish that has a browned crust, often using breadcrumbs, grated cheese, egg or butter. It's usually made with cream and baked in a shallow pan with cheese or butter on top that gets nice and crispy on top.  How can you go wrong with that? You can't.

    Do I need a special pan to make a gratin?

    Traditionally gratin pans are used to make au gratin potatoes. What exactly is a gratin pan? A gratin pan is a shallow oval baking dish that allows the ingredients to be spread in thin layers so you can have a large surface area on top that can get a nice browned crust when it is baked in the oven.

    Do you have to use one for these potatoes? No, but it sure looks pretty and its a great addition to any kitchen bakeware collection. But don't worry, if you don't have one you can sub in an 8 x8 or 9x 13 glass baking dish. Just be sure to adjust your baking time.

    You'll need to add a little time in the oven if you use an 8 x 8 because the layers will be thicker and shave a little time off if you use a 9 x 13 since your layers will be thinner.

    How do I slice potatoes thinly?

    There are a few kitchen tools that I will give up valuable storage space in my kitchen and a mandoline is one of them. There is NO better, faster way to get even thin-sliced potatoes than with a mandoline. I have an OXO mandoline slicer and I absolutely love it.

    But please promise me that you will use the supplied holder to grip the potatoes. Your fingers will thank you for saving them from the sharp blades.

    Once you get your hands on a mandoline you'll be looking for all of the things to slice. You can also use it to make slicing easy in these recipes too.

    • Herby Au Gratin Potatoes
    • Crispy Zucchini Feta Fritters

    What ingredients do I need for this potato gratin?

    1. Russet Potatoes
    2. Portobello Mushrooms
    3. Provolone Cheese
    4. Heavy Cream
    5. Fresh Thyme
    6. Grated Parmesan Cheese

    This gratin is filled with layers of thinly sliced potatoes, mushrooms, flavorful Provolone cheese, seasoned with thyme and then topped off with cream and a sprinkle of parmesan.

    What kind of potatoes do I use for a gratin recipe?

    I tried this recipe with several different kinds of potatoes. So trust me and stick with russet potatoes, they do the best job of keeping their texture when baked in cream.

    Don’t try to sub in Yukon Golds. Their water content is too high, and the end result is a soupy mess. And no one wants to eat a soupy mess.

    Do I need to use cream in au gratin potatoes or can I use milk?

    Because the flavors in this gratin shine through, I used heavy cream and lots of cheese

    A couple of things I learned when making this gratin. A recipe is only as good as the ingredients you use, so don’t try to make this low cal and use milk or less cheese and expect the same results.

    It’s not going to happen. 

    Fair warning: This is not a recipe for someone counting calories. I'm a firm believer in enjoying everything in moderation so I don't make this heavy side dish all of the time, but when I do make it, I let myself enjoy it.

    This easy side dish is impressive for entertaining as well as a unique side dish for your holiday dinner menu.

    If you are looking for a lighter potato dish give this flavor-packed Rosemary Roasted Sweet Potatoes and Onions recipe a try. It's a staple in our dinner side dish rotation. 

    Looking for more options? Check out all of our side dish recipes here.

    Serving of Potato gratin on a small white plate with the large gratin dish behind it for serving.

    What to serve with au gratin potatoes?

    You can't have a meal with potatoes alone. Add these reader favorite recipes to round out your holiday menu.

    • Spinach Salad with Homemade Balsamic Vinaigrette Dressing
    • Oven Roasted Asparagus
    • Spicy Maple Roasted Carrots
    • Grilled Beef Tenderloin
    Provolone Mushroom and Potato Gratin recipe in white dish on a dark brown surface.

    Try some of our other favorite potato recipes.

    • Brown Butter Hasselback Potatoes
    • Grilled German Potato Salad
    • Herby Grilled Potatoes
    • Day Before Mashed Potatoes
    • Goat Cheese Sweet Potato Gratin
    • Sweet Potato and Apple Casserole
    Provolone, Mushroom, and Potato Gratin in a white dish on top of yellow linens and a dark wood backdrop.

    Provolone and Mushroom Gratin

    Garnish With Lemon
    Cheesy potatoes just got an upgrade with this easy Provolone and Mushroom Potato Gratin Recipe.
    4.52 from 27 votes
    Print Recipe Pin Recipe
    Prep Time 15 mins
    Cook Time 45 mins
    Additional Time 5 mins
    Total Time 1 hr 5 mins
    Course Side Dishes
    Cuisine American
    Servings 6 servings
    Calories 472 kcal
    Prevent your screen from going dark

    Ingredients
      

    • 5 medium russet potatoes sliced thinly (⅛ inch thick)
    • 1 tablespoon olive oil
    • 1 8-ounce package sliced portabello mushrooms
    • 1 ½ cups heavy cream
    • 1 teaspoon thyme
    • 1 teaspoon minced fresh garlic
    • 6 slices provolone cheese
    • 2 tablespoons parmesan cheese
    • salt and pepper

    Instructions
     

    • Preheat oven to 400 degrees. Spray a 2 quart oval baking dish lightly with cooking spray and set aside.
    • Peel potatoes and cut into ⅛ inch thin slices and place in a large bowl.
    • In a small skillet, add olive oil and mushrooms and heat on medium for 5-6 minutes to let mushrooms release moisture. Remove from heat and set aside.
    • In a small pan heat cream, thyme and garlic over low heat until warm but not boiling, and pour over potatoes. Season with salt and pepper. Stir gently to coat.
    • Spoon a third of the potato and cream mixture into prepared dish and arrange so potatoes are evenly distributed. Add ⅓ of the mushrooms and cover with 2 slices of provolone cheese.
    • Repeat the process two more times, finishing with mushrooms and cheese. Pour extra cream left in the bowl over top.
    • Using a spatula, press down to compact layers and then sprinkle with parmesan cheese.
    • Bake for 45 minutes and let sit for 5 minutes before serving.

    Nutrition

    Serving: 1gCalories: 472kcalCarbohydrates: 34gProtein: 13gFat: 32gSaturated Fat: 19gPolyunsaturated Fat: 11gTrans Fat: 1gCholesterol: 88mgSodium: 366mgFiber: 4gSugar: 4g

    Nutrition info not guaranteed to be accurate.

    Did you make this recipe?Tag us on Instagram or leave a comment!

    This easy Provolone, Mushroom and Potato Gratin recipe is a simple, flavor-packed side dish for entertaining or a great addition to your holiday menu.

    « Beef Provencal
    Shaved Brussels Sprouts Salad Recipe with Citrus Vinaigrette »

    About Lisa

    Hi, I’m Lisa! Looking for the party? It’s probably at my house. Nothing brings me more joy than sharing good food with friends and family. That and a seriously good cocktail.

    Reader Interactions

    Comments

    1. Shannon Parmentier says

      December 28, 2021 at 3:57 pm

      5 stars
      I followed the recipe exactly, with one exception. Instead of using only provolone cheese, I used a combination of provolone and Swiss.
      I did have to create more of the cram mixture, but I may have had more potatoes than it called and I like a more moist potato dish. The ending results were fantastic and super simple to make.

      Reply
      • Lisa says

        December 29, 2021 at 9:18 am

        Hi Shannon! I'm so happy you had such great results! Thanks for your feedback! Happy New Year!

        Reply
    2. Michelle says

      December 24, 2021 at 2:49 pm

      Making this right now for Christmas dinner. One with mushrooms and one without. Half way through cooking time I read everything above the recipe. The list includes butter but know where in the recipe does it call for butter. My guess is it should have been added to the cream. Sure hope this doesnt ruin my dishes.

      Reply
      • Lisa says

        December 28, 2021 at 8:25 am

        Hi Michelle, You don't need any butter for this recipe! I have updated the list to remove it! Hope it turned out great! Happy New Year!

        Reply
        • Michelle says

          January 04, 2022 at 9:18 am

          Both dishes turned out perfectly. Without mushrooms was as big a hit as with!

        • Lisa says

          January 04, 2022 at 12:38 pm

          Fabulous! Thanks for the feedback! Happy New year!

    3. SB says

      November 26, 2019 at 6:21 pm

      Made this a couple of times, reduced the cheese, used cheddar instead. Unfortunately this website has become really spammy, thought I'd provide the feedback.

      Reply
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