
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
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
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.
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.
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.
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.
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.
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.
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.
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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- Meal
- Dinner
- Cuisine
- Mediterranean
- Quick & Easy
- Easy




