If you’re looking to add a unique and comforting dish to your dinner table, this Fennel Gratin Recipe is an absolute winner. Tender fennel bulbs come together with a crispy, cheesy breadcrumb topping that bakes to golden perfection, offering layers of flavor with every bite. It’s a dish that transforms a humble vegetable into something indulgently satisfying, making it perfect for family meals or special occasions. Whether you’re a fennel fan or trying it for the first time, this recipe is a delightful way to experience fennel’s aromatic sweetness paired with a rich, crunchy crust.

Ingredients You’ll Need
With just a handful of simple ingredients, this Fennel Gratin Recipe achieves an impressive balance of textures and flavors. Each ingredient plays a crucial role—from the slight anise-like crunch of the fennel to the salty sharpness of parmesan and the golden, buttery crispness of the breadcrumbs.
- 4 bulbs fennel: The star of the dish, providing a mild, licorice-flavored base that softens perfectly when baked.
- 1 cup Panko breadcrumbs: These create a light and crisp topping that contrasts beautifully with the tender fennel.
- 2/3 cup shredded parmesan cheese: Adds savory depth and a lovely melting texture to the gratin.
- 1/2 cup parsley (finely chopped): Brings a fresh, herbaceous note that brightens the dish.
- 1/2 teaspoon salt: Enhances all the flavors without overpowering the natural sweetness of the fennel.
- 1/4 teaspoon ground black pepper: Adds just the right amount of warmth and complexity.
- 2 tablespoons olive oil: Helps to keep the fennel moist while adding a subtle fruity richness.
- 2 tablespoons butter (melted): Contributes to the buttery crust that makes every bite so comforting.
How to Make Fennel Gratin Recipe
Step 1: Prepare and Simmer the Fennel
Start by trimming the fennel bulbs to remove the fronds and the tough base, then slice them into 1 to 2-inch strips while discarding any woody centers. Heating six cups of boiling water in a large pot, add the fennel strips and let them simmer gently for about seven minutes. This pre-cooking step softens the fennel just enough so it becomes tender in the oven without losing its delightful texture.
Step 2: Preheat Oven and Combine Topping
While the fennel simmers, preheat your oven to 375 degrees Fahrenheit, setting the stage to bake the gratin to perfection. In a mixing bowl, stir together the Panko breadcrumbs, shredded parmesan cheese, finely chopped parsley, salt, and ground black pepper. This flavorful mixture will become both part of the creamy filling and the golden crispy crust you’ll love.
Step 3: Assemble the Gratin
Drain the tender fennel well and transfer it to a baking dish. Drizzle the olive oil and melted butter evenly over the fennel, ensuring it stays moist and gains buttery richness. Then, fold half of the breadcrumb mixture into the fennel to distribute those crunchy, cheesy bites throughout the dish. Spread the remaining mixture evenly over the top to create that irresistible golden topping.
Step 4: Bake the Fennel Gratin
Cover the baking dish with tin foil and place it in the preheated oven. Bake for 25 minutes, allowing the fennel to bubble and the flavors to meld. Afterward, remove the foil and return the dish to the oven for an additional 20 minutes. This final step browns the topping beautifully, creating a crisp, toasted layer that perfectly contrasts the melting tender fennel below.
How to Serve Fennel Gratin Recipe

Garnishes
To elevate your Fennel Gratin Recipe, sprinkle a few fresh parsley leaves on top right before serving for a pop of color and a fresh herbal note. A light drizzle of good-quality extra virgin olive oil after baking can add a glossy finish and enhance the richness.
Side Dishes
This gratin pairs wonderfully with a variety of mains. Consider serving it alongside roasted chicken, grilled fish, or a simple pan-seared steak. Its mild yet flavorful profile also works well with lighter meals like grain bowls or a crisp green salad, balancing heartiness with freshness.
Creative Ways to Present
For a charming presentation, serve the fennel gratin in individual ramekins or small baking dishes for a personal touch at dinner parties. Layering the gratin as a vegetable side in a festive holiday spread can make this unique veggie dish stand out, tempting even the pickiest eaters to dig in.
Make Ahead and Storage
Storing Leftovers
If you find yourself with leftovers, place the fennel gratin in an airtight container and refrigerate. It will keep well for up to three days, retaining most of its textures and flavors which makes it perfect for easy next-day meals.
Freezing
This dish freezes beautifully. Let it cool completely, then cover tightly and freeze for up to two months. When you’re ready, thaw overnight in the fridge before reheating to keep that creamy, crispy balance just right.
Reheating
To reheat, place the gratin in an oven-safe dish and warm it at 350 degrees Fahrenheit until heated through and the breadcrumb topping regains some of its crunch, approximately 15 to 20 minutes. Avoid microwaving if possible to prevent sogginess.
FAQs
Can I use a different cheese instead of parmesan?
Absolutely! While parmesan provides a sharp, salty flavor that complements fennel beautifully, you can substitute with gruyere, pecorino romano, or even a mild cheddar to vary the taste and texture.
Is fennel gratin suitable for vegetarians?
Yes, this recipe is vegetarian-friendly. Just make sure the parmesan cheese you use is free from animal rennet if you want to adhere strictly to vegetarian standards.
Can I make this recipe vegan?
To make a vegan version, swap the butter for a plant-based alternative, and use nutritional yeast or a vegan cheese substitute instead of parmesan. Also, use olive oil generously to maintain richness in the dish.
What can I substitute for Panko breadcrumbs?
If you don’t have Panko, regular breadcrumbs will work fine, although the topping may be a bit denser. For a gluten-free version, use gluten-free breadcrumbs or crushed nuts like almonds or walnuts for crunch.
Is it okay to skip the boiling step and put raw fennel directly in the oven?
Boiling softens the fennel and reduces oven time, ensuring the gratin has a tender texture throughout. If you skip this step, your fennel might remain a bit too crunchy, or the baking time will need to increase significantly to achieve the same tenderness.
Final Thoughts
This Fennel Gratin Recipe is truly one of those dishes you’ll find yourself returning to again and again. Its irresistible combination of tender fennel and a crispy, cheesy crust hits all the right notes for a satisfying side or even a light main course. Give it a try—you might just discover your new favorite way to enjoy fennel.
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Fennel Gratin Recipe
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour
- Yield: 6 servings
- Category: Side Dish
- Method: Baking
- Cuisine: European
Description
A delicious and easy-to-make Fennel Gratin featuring tender fennel bulbs covered with a crispy Parmesan and Panko breadcrumb topping, baked to golden perfection. This elegant side dish balances the mild anise flavor of fennel with the richness of butter and cheese, making it a perfect complement for a variety of main courses.
Ingredients
Vegetables
- 4 bulbs fennel
Topping
- 1 cup Panko breadcrumbs
- 2/3 cup shredded parmesan cheese
- 1/2 cup parsley (finely chopped)
- 1/2 teaspoon salt
- 1/4 teaspoon ground black pepper
Others
- 2 tablespoons olive oil
- 2 tablespoons butter (melted)
Instructions
- Preheat and Boil: Heat 6 cups of boiling water in a large pot and preheat your oven to 375 degrees F (190 degrees C).
- Prepare Fennel: Trim the fronds and base from the fennel bulbs. Cut the fennel into 1 to 2-inch strips and remove any woody centers to ensure tenderness.
- Simmer Fennel: Place the fennel strips into the boiling water and let them simmer gently for 7 minutes until slightly softened.
- Mix Topping: While fennel simmers, combine the Panko breadcrumbs, shredded parmesan cheese, finely chopped parsley, salt, and black pepper in a small bowl, mixing well.
- Assemble Dish: Drain the fennel thoroughly and place it evenly in a baking dish. Drizzle the olive oil and melted butter over the fennel. Mix half of the breadcrumb mixture with the fennel to incorporate flavor throughout, then evenly spread the remaining breadcrumb topping over the surface.
- Bake Covered: Cover the baking dish with tin foil and bake in the preheated oven for 25 minutes to let the flavors meld and the fennel cook fully.
- Bake Uncovered: Remove the tin foil and continue baking for an additional 20 minutes or until the top is beautifully browned and crisp.
Notes
- For a richer flavor, you can add a little garlic to the breadcrumb mixture.
- Use fresh parsley for the best flavor and vibrant color.
- Be sure to remove the woody core of the fennel to avoid toughness.
- Serve hot as a side dish with roasted meats or vegetarian mains.
- Leftovers can be refrigerated for up to 3 days and reheated in the oven to maintain crispiness.

