Roasted Fennel and Anise Sauce
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Roasted Fennel and Anise Sauce

A silky vegan pasta sauce built on caramelized roasted fennel sweetened by star anise and fennel seeds, brightened with white wine and garlic. The fennel softens into a creamy base while the anise notes add warmth and licorice depth. Toss with long pasta or use as a light sauce for seafood.

Prep
15 min
Cook
45 min
Wait
10 min
Total
1 hr 10 min
Makes
About 2 cups (480 ml) sauce, enough for 1 pound (454 g) pasta
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Steps

Before you start
  • Preheat your oven to 425 °F (220 °C)
  • Trim fennel bulbs and quarter them lengthwise, reserving any feathery fronds for garnish
  • Have white wine at room temperature
  1. Roast the fennelOven 425°F / 220°C

    • Toss the fennel wedges with 4 tablespoons olive oil, 3/4 teaspoon salt, and 1/4 teaspoon black pepper on a large baking sheet.
    • Spread in a single layer, cut-side down.
    • Roast in a 425 °F (220 °C) oven for 30–35 minutes, stirring halfway through, until the fennel is deeply golden and tender when pierced with a fork.
    • The cut sides should show caramelization.
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    Ready when: Fennel is deeply golden and very tender

    Tip: Don't crowd the pan; fennel needs dry heat and space to caramelize properly.

  2. Toast the spices

    • While the fennel roasts, warm a large heavy-bottomed pot over medium heat.
    • Add the fennel seeds and star anise pods.
    • Toast for 1–2 minutes, stirring constantly, until fragrant and lightly darkened.
    • Be careful not to burn them.
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    Ready when: Spices are fragrant and golden

    Tip: Toasting releases the essential oils; don't skip this step or the sauce will taste flat.

  3. Sauté the garlic

    • Add 2 tablespoons olive oil to the toasted spices.
    • Once shimmering, add the minced garlic and stir constantly for 30 seconds until fragrant, being careful not to brown it.
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    Ready when: Garlic is fragrant and pale golden

    Tip: Garlic burns quickly; watch carefully and stop before it turns brown.

  4. Deglaze with wine

    • Pour in the white wine all at once.
    • Scrape the bottom of the pot with a wooden spoon to lift any browned bits.
    • Increase the heat to medium-high and let the wine simmer for 2–3 minutes until reduced by about half.
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    Ready when: Wine is visibly reduced and smells sweet

    Tip: Reducing the wine concentrates its flavor and burns off the harsh alcohol bite.

  5. Add broth and roasted fennel

    • Pour in the vegetable broth.
    • Remove the roasted fennel from the oven and carefully add it to the pot, breaking any very large pieces in half with your spoon.
    • Stir gently and bring to a simmer over medium heat.
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    Ready when: Liquid is gently simmering

    Tip: The fennel is already tender, so you're just infusing the broth with flavor now.

  6. Simmer and season

    • Reduce the heat to medium-low and simmer gently, uncovered, for 10 minutes.
    • Stir occasionally.
    • Add 1/2 teaspoon salt.
    • Taste and adjust seasoning as needed.
    • Add a pinch or two of red pepper flakes if you'd like subtle heat.
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    Ready when: Flavors have melded and sauce is cohesive

    Tip: Taste before adding all the red pepper flakes; a small amount goes a long way.

  7. Blend the sauce

    • Remove from heat and let cool for 3–5 minutes.
    • Using an immersion blender, blend the sauce until smooth but still with some texture (you can leave a few small fennel pieces if you prefer).
    • Alternatively, carefully transfer the sauce to a standard blender in batches, blend until smooth, and return to the pot.
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    Ready when: Sauce is smooth and creamy

    Tip: Leave it slightly textured rather than silky-smooth; this keeps the sauce rustic and prevents it from breaking.

  8. Finish and garnish

    • Gently warm the sauce over low heat if it has cooled.
    • Taste one more time and adjust salt and pepper.
    • Stir in the fresh fennel fronds and lemon zest if using.
    • Drizzle with a little extra olive oil if desired.
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    Ready when: Sauce is warm and ready to serve

    Tip: Add fresh garnishes at the end to preserve their bright color and crisp texture.

Good to know

Tips
  • For a creamier sauce without dairy, blend in 1/4 cup raw cashews (soaked 15 minutes in hot water) along with the fennel. This adds richness without overwhelming the delicate anise flavors.
  • Fennel pairs beautifully with seafood—toss this sauce with shrimp, scallops, or white fish instead of pasta for a lighter meal.
  • Save any excess roasted fennel wedges as a side dish: reheat gently and serve with crusty bread and a squeeze of lemon.
  • This sauce freezes well and is perfect for batch cooking. Make a double batch and freeze half for a quick weeknight meal.
Make ahead

Sauce can be made up to 2 days ahead. Cool completely and store in an airtight container in the refrigerator.

Storage & reheating

Room temperature: up to 2 hours. Refrigerator: up to 3 days in an airtight container. Freezer: up to 2 months in a freezer-safe container. Reheat gently over medium-low heat, stirring often, or in the microwave in 30-second intervals. Add a splash of broth or water if the sauce thickens too much.

Substitutions
  • dry white wine (such as Pinot Grigio) → dry vermouth or additional vegetable broth mixed with 1 tablespoon lemon juice. Vermouth adds herbal notes; broth-and-lemon keeps it lighter but less complex.
  • star anise pods → additional fennel seeds (use 1 tablespoon total) or a few saffron threads. Omitting star anise makes the sauce less licorice-forward but still aromatic.
  • vegetable broth → reserved fennel roasting liquid (if collected) or additional white wine. Using roasting liquid adds caramelized depth.
  • fresh fennel fronds → fresh tarragon or dill, finely chopped. Tarragon adds anise notes without being as bold; dill gives a lighter herbal finish.

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