Fennel Gratin

Baked fennel with olive oil, mozzarella and parmesan cheeses, bread crumbs and fresh thyme.

Photography Credit: Elise Bauer

I never used to know what to do with fennel, but these days, I can’t get enough of it. Fennel is the most wonderfully versatile vegetable. You can slice raw fennel thin and serve it with a little shaved Parmesan for a crisp salad. Or you can plop it in the oven with a little balsamic and roast it until it gets sweetly caramelized. Fennel has a special affinity for Parmesan, and in this simple gratin fennel wedges are tossed with breadcrumbs, Mozzarella and Parm, and baked until golden brown. A lovely side for lighter fare, such chicken or fish, and would also work well as a dressy side for a holiday meal.

Fennel gratin just out of the oven, cooling on the stovetop

Fennel Gratin Recipe

  • Prep time: 15 minutes
  • Cook time: 45 minutes
  • Yield: Serve 6-8 as a side dish.


  • 2 pounds fennel bulbs (3 lbs with fronds), about 3-4 bulbs
  • Salt
  • 3-4 Tbsp olive oil
  • 1/2 cup grated parmesan cheese (about 2 ounces)
  • 1/2 cup bread crumbs (herbed or plain)
  • 2 teaspoons fresh thyme
  • 1/2 cup shredded mozzarella cheese (about 2 ounces)
  • Chopped fennel fronds, for garnish



1 Cut off the fronds and stems of the fennel and save them for another dish; they are a great addition to stocks and broths. Cut the bulbs in quarters, then 1-2 inch pieces; discard the woody cores.

2 Grease a casserole pan or gratin pan with 1 tablespoon olive oil and preheat the oven to 375°.

3 Boil the fennel in a medium pot of salty water for 5-6 minutes, or until the fennel is just about tender. Drain well and toss with a tablespoon of olive oil.

4 Mix the parmesan, thyme and bread crumbs, then mix half of that mixture with the fennel. Add the fennel to the casserole in an even layer. Top with the mozzarella cheese, then the rest of the parmesan-bread crumb mixture. Drizzle 1-2 tablespoons of olive oil over the top.

5 Cover the casserole and bake for 20 minutes. Take the cover off and bake until the cheese is well browned, about 15 more minutes. Let the gratin rest for 5 minutes before serving. Garnish with chopped fresh fennel fronds.

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Fennel and Potato Gratin - from Herbivoracious
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Showing 4 of 16 Comments

  • Sarah

    WOW! AMAZING! I received the fennel in a basket I purchased as well as a country sourdough loaf that I made crumbs out of with herbs. I added a bit more olive oil and crumb mixture and my very, extremely picky 7 year old went crazy over this dish! Thanks so much for easy instructions and pictures! (It is great with a basic porkloin roast!)

  • Julia

    This is delicious! I had some fennel in a produce basket I received, so i googled what I should make. I cook often, but I’ve never cooked with fennel, because it seemed too licorice-y for me, but this was delicious! I didn’t have very high hopes, but I wanted to make something to use the fennel. I wish I would’ve bought a few more bulbs of fennel to supplement what I received in my basket, because this was SO good. We will be making this again! Thank you!

  • Florence

    I am a fan of Japanese bread crumbs, do you think they would work well in this recipe?

    I think panko would work great here. ~Elise

  • Maria Evans

    Thanks so much for your website. It’s one of the first places I go when looking for meal ideas. I’m making this for dinner this week, and am just curious if boiling the fennel was a matter of ease of prep or if it makes a difference in the end flavor (as opposed to sauteeing or roasting it). Thanks again.

    You boil the fennel first to cook it. Putting the dish in the oven is to brown the top and melt the cheese. ~Elise

  • Louee

    Made this last night – was so delish! Substituted a quarter cup of the Kraft Shake n Bake ranch breadcrumbs instead of adding thyme and the result was great! The boyfriend was wary about fennel but he ended up loving it!
    Thank you!

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Fennel Gratin