Crispy air fryer fennel: the 15-minute side dish you’ll love

Posted on November 18, 2025

Air Fryer Fennel Gratin

Fennel is often the underdog of the vegetable world, but the air fryer completely transforms it. High heat turns the crisp bulbs into tender, caramelized wedges, while the breadcrumb topping gets perfectly golden and crunchy. This isn’t just plain roasted fennel, though: it’s packed with a savory punch thanks to melting anchovies, zesty lemon, and a warm spice blend.

This recipe is the definition of low effort, high reward. It’s ready in a flash and adds a sophisticated touch to simple meals like grilled fish, roast chicken, or even a fluffy omelet. Even if you think you don’t like fennel, the caramelized sweetness and savory crumb might just change your mind.

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Air Fryer Fennel Gratin

Crisp, aromatic fennel wedges cooked in the air fryer with breadcrumbs, lemon zest, spices, and anchovies for a flavorful Mediterranean-style side dish.
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings: 2 servings
Calories: 257

Ingredients
  

What you’ll need for the air fryer fennel gratin
Ingredients
  • 1 fennel bulb
  • 2 anchovy fillets
  • extra-virgin olive oil, as needed
  • breadcrumbs, as needed
  • salt, to taste
  • black pepper, to taste
  • 1 whole fresh chili pepper sliced
  • 1 pinch sweet paprika
  • 1 pinch ground ginger
  • 1 lemon (zest only)
  • fennel fronds, for garnish

Equipment

  • Air fryer
  • Mixing bowl
  • Grater

Method
 

How to make the air fryer fennel gratin
    Prepare the fennel
    1. Trim the fennel and cut into wedges or thick slices.
      Air Fryer Fennel Gratin
    Seasoning
    1. Place the fennel in a bowl and season with olive oil, salt, pepper, sweet paprika, and ground ginger.
    2. Add the anchovy fillets broken into pieces, the sliced chili pepper, and a generous handful of breadcrumbs.
    3. Grate the lemon zest over the mixture and combine until evenly coated.
    Cooking
    1. Transfer the fennel to the air fryer basket and cook at 356°F (180°C) for about 15 minutes, shaking halfway.
    Serving
    1. Serve hot and garnish with fennel fronds and, if desired, more lemon zest.
    How to store
    1. Store leftovers in an airtight container in the refrigerator for up to 1 day. Reheat in the air fryer before serving.
    Air Fryer Fennel Gratin
    Air Fryer Fennel Gratin

    Chef’s tips

    • The anchovy factor: don’t be afraid of the anchovies! They melt completely during cooking, leaving behind a rich, savory depth (umami) rather than a fishy taste. If you need a vegetarian version, swap them for a tablespoon of chopped capers or black olives.
    • Extra crunch: for the crispiest texture, try using Panko breadcrumbs instead of regular fine breadcrumbs. They are lighter and crisp up beautifully in the air fryer.
    • Cheesy upgrade: although this recipe is delicious as is, mixing 2 tablespoons of grated Parmesan cheese into the breadcrumbs before tossing creates an irresistible golden crust.
    — Some images featured in our recipes serve illustrative purposes only. Each preparation is carefully tested, yet the final outcome may vary depending on the ingredients you use and the equipment available in your own kitchen.

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