Potato-Fennel Gratin Recipe (2024)

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by Sandyon Apr 9, 2020 (updated Nov 23, 2020)

This potato gratin recipe is the perfect side dish for a weeknight or holiday gathering! Ina Gartin’s Potato-Fennel Gratin Recipe is the best! WATCH THE VIDEO!

Potato-Fennel Gratin Recipe (1)

For Easter Sunday, or any time of year, this Potato-Fennel Gratin Recipe is a crowd pleaser!

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Potato-Fennel Gratin Recipe

Enjoy a 9×13 pan of this scrumptious Ina Gartin’s Potato-Fennel Gratin Recipe! It’s is cheesy, creamy, and delicious!

We love it with ham or Crusted Pepper Prime Rib, and it’s also delicious with any chicken recipe!

Actually, you can serve it with any meat on the side, with a fresh vegetable.

It’s a great potato dish for a holiday brunch!

Potato-Fennel Gratin Recipe (2)

What is potato gratin?

Gratin is how you prepare an ingredient (potatoes, cauliflower, broccoli, etc) that is is topped with a browned crust, often using breadcrumbs, grated cheese, egg or butter.

Gratin is a French cuisine method, usually prepared in a shallow dish of some kind.

We use a large baking pan, usually a 9×13 pan for this recipe!

You may also want to try my popular Cauliflower Bacon Gratin!

Potato-Fennel Gratin Recipe (3)

Ingredients for Potatoes-Fennel Gratin

  • Fennel bulbs (you can usually buy 2 in a pack from Trader Joe’s)
  • Yellow onion
  • Good olive oil and usnsalted butter
  • Russet potatoes
  • Heavy cream andGruyère cheese (this cheese just makes this recipe!)
  • Kosher salt and ground black pepper

Potato-Fennel Gratin Recipe (4)

What does potato gratin go with?

There are so many dishes that you can serve potato gratin with, like Slow Cooker Short Ribs, Simple Chicken Parmigiana Recipe, and Pork Tenderloin.

We also love it for spring and summer with our Grilled Cornish Game Hens!

Potato-Fennel Gratin Recipe (5)

How to make Potato-Fennel Gratin

I’m so glad I decided to make Ina Garten’s Potato-Fennel Gratin Recipe. It’s truly different than the average Scalloped Potato Gratin recipe, and the mix of fennel and cheese is just fantastic!

Easy to make ahead, I like to make the day before so it’s ready to pop in the oven the day of the party!

Potato-Fennel Gratin Recipe (6)

Start with gorgeousfennel bulbs.

Potato-Fennel Gratin Recipe (7)

Chopped and sauted with onion.

Potato-Fennel Gratin Recipe (8)

Sliced potatoes using thisamazing OXO mandoline.

Potato-Fennel Gratin Recipe (9)

Baked to perfection!

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Make the gratin potatoes the day before

I often double the recipe and make 2 pans the day before a dinner party.

You can warm them in the oven before serving!

Get the Recipe:

Ina Garten’s Potato-Fennel Gratin

Recipe from Ina Garten, The Barefoot Contessa Cookbook. I doubled the recipe and decreased the cooking time to 1 hour; heating them up later before the party.

Prep Time: 25 minutes mins

Cook Time: 1 hour hr 15 minutes mins

Total Time: 1 hour hr 40 minutes mins

Yield: 10

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  • 2 small fennel bulbs
  • 1 yellow onion, thinly sliced
  • 2 tablespoons good olive oil
  • 1 tablespoon unsalted butter
  • 2 pounds russet potatoes, 4 large potatoes
  • 2 cups plus 2 tablespoons heavy cream
  • 2 1/2 cups grated Gruyère cheese, 1/2 pound
  • 1 teaspoon kosher salt
  • 1/2 teaspoon freshly ground black pepper


  • Preheat the oven to 350 degrees F.

  • Butter the inside of a 10-by-15-by-2-inch (10-cup) baking dish.

  • Remove the stalks from the fennel and cut the bulbs in half lengthwise. Remove the cores and thinly slice the bulbs crosswise, making approximately 4 cups of sliced fennel. Saute the fennel and onions in the olive oil and butter on medium-low heat for 15 minutes, until tender.

  • Peel the potatoes, then thinly slice them by hand or with a mandoline. Mix the sliced potatoes in a large bowl with 2 cups of cream, 2 cups of Gruyère, salt, and pepper. Add the sauteed fennel and onion and mix well.

  • Pour the potatoes into the baking dish. Press down to smooth the potatoes. Combine the remaining 2 tablespoons of cream and 1/2 cup of Gruyère and sprinkle on the top. Bake for 1 1/2 hours, until the potatoes are very tender and the top is browned and bubbly. Allow to set for 10 minutes and serve.


Originally posted FEB 2015

Cuisine: American

Course: Side Dish

Author: Sandy / Reluctant Entertainer

Did you make this recipe?Tag @reluctantentertainer on Instagram and hashtag it #reluctantentertainer!

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Potato-Fennel Gratin Recipe (17)

Hello and welcome to my home and table!

I’m Sandy—lover of food, family, cooking, THE BIG BOARD, travel, and bringing people together. Through great recipes and connection around the table, we become better, stronger, and more courageous people. Feasting on Life is real, and every time we do it, we grow a little more. Read more...

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Christmas Easter Holidays Recipes Side Dishes Vegetarian Videos

originally published on Apr 9, 2020 (last updated Nov 23, 2020)

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20 comments on “Potato-Fennel Gratin Recipe”

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  1. LindaReply

    Potato-Fennel Gratin Recipe (18)
    I have made this a few times, always a hit. This time I made a couple of changes. I halved the recipe as there were only three of us and a generous mountain of meaty pork back ribs. I included the full 2 TBSP of cream for cheese topping and the full 1/2 cup of additional cheese for topping. It was perfect!
    (I also cut both the fennel and onion into inch slices as family mentioned the longer strips were too big…whatever works…the flavour is still there).

  2. Mary KielbReply

    Hi, I think you had said you can prepare it the night before and bake it the day of , can you let me k ow if that would be okay, I am doubling the recipe so it would be much easier

    • Sandy

      I usually make and bake the day or 2 before, then I reheat it in the oven the day of.

  3. MonicaReply

    This was excellent! I appreciate the short list of ingredients and even though I didn’t have gruyere (used cheddar/jack) and only one fennel it still tasted really good! Thank you for this recipe. I will definitely make this again.

  4. MarianReply

    Potato-Fennel Gratin Recipe (19)
    Can this recipe be frozen?

    • Sandy

      I would think that after it is made and cooled, you could freeze it!

  5. Vivian HnasonReply

    I have 2 au gratin dishes Each one holds 14 OZ. How long would each be in the oven with this recipe and at what temp??

  6. Barbara TricaricoReply

    Potato-Fennel Gratin Recipe (20)
    Thank you for mentioning my Ashland book! And I do know your cousin :) A very talented photographer!! This morning, my daughter-in-law across the country emailed me this recipe, since she was trying it, and we couldn’t help smiling at the coincidence at your mention.. I’m glad she found this, since I’ll now be sure and bookmark your wonderful blog!!

    • Sandy

      Such a small world. Love your book, and enjoy the recipe! xo

  7. SusanReply

    You mentioned that you made this a day before…I find that my potatoes sometimes turn brown if not cooked immediately. Did you cook it when you first made it and then re-heat? If so, would love to know the timing so it doesn’t dry out. Thanks in advance!

    • Sandy

      I’ve done it both ways, Susan. This recipe is a little browner on top anyway because of the fennel and onions, baked into the cheese. I’ve cooked it ahead, and cut squares (reheated) and served. But the best is to serve it hot out of the oven! :)

  8. Cindy FrankReply

    To die for!!

  9. sylvieReply

    Crispy outside, melty inside (it sounds like that), exactly the textures I love!

  10. bev @ bevcooksReply

    That is one SEXY gratin. Deeeeeuuuum.

  11. Brian @ A Thought For FoodReply

    That table setting is gorgeous, as is this gratin! I love adding fennel to dishes this time of year… especially ones that are on the heavier side to give it a little brightness. Gorgeous dish!

  12. Heidi SchuurmanReply

    That looks so yummy, and the table is gorgeous! I love the pop of red. Have fun!

  13. KirstinReply

    Oh yum! Just pinned that one! I don’t think I have ever made a gratin. I’ve made scalloped potatoes but pretty typical recipe. This looks so rich and yummy! And with salmon and everything else….my tummy is growling…winner winner chicken dinner

  14. Patricia @ Grab a PlateReply

    This dish looks amazing! I love fennel and I could probably eat an entire pan of this. Looks like a lovely party!

  15. AggieReply

    “keep me reasonably sweet”…
    I love this poem / prayer sandy!

    Your party sounds amazing!! I wish I could have a place to sit…enjoy those potatoes <3

  16. JulieDReply

    Looks awesome, Sandy!! :)

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