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The Treviso Cloister: Pan-Seared Radicchio Crostoni with Gorgonzola Dolce and Vermouth Glaze

The Treviso Cloister: Pan-Seared Radicchio Crostoni with Gorgonzola Dolce and Vermouth Glaze

Caramelized, smoky edges transform bitter Radicchio di Treviso into a masterpiece of texture and balance. Served over warm, pan-seared sourdough slathered with creamy Gorgonzola dolce and finished with a glossy dry vermouth glaze, this is an effortless weekend lunch that lets the simple ingredients do the heavy lifting.

Elena Rossi
Elena Rossi
Prep: 10 minutes
Cook: 17 minutes
2
easy
lunch
radicchiocrostinipan-searedeasy-lunch+1

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Timeline

17 minutes
0m5m10m15m17m
Toast Walnuts
3m
Pan-Sear Sourdough
5m
Spread Gorgonzola Base
2m
Sear Radicchio Wedges
4m
Make Vermouth Glaze
3m
Assemble and Finish
2m

Ingredients

  • 2 heads Radicchio di Treviso (or standard Radicchio)(cut into quartered wedges with root intact)
  • 4 slices crusty sourdough bread(cut thick, about 3/4-inch)
  • 2 tbsp extra-virgin olive oil(divided)
  • 2 tbsp unsalted butter(divided)
  • 4 oz Gorgonzola Dolce(room temperature; Taleggio also works)
  • 1/4 cup dry vermouth(Italian dry white vermouth)
  • 1 tbsp honey(mild wildflower or acacia)
  • 1/3 cup walnuts(roughly chopped)
  • 1 tbsp fresh sage leaves(thinly sliced)
  • 1 pinch flaky sea salt and black pepper(to taste)

Instructions

  1. 1

    In a wide skillet over medium heat, toast 1/3 cup walnuts, roughly chopped until fragrant and lightly golden, about 3 minutes. Transfer to a small bowl and set aside.

    3 min

    Tip: Watch closely—nuts transition from perfectly toasted to overdone in seconds.

  2. 2

    Heat 1 tbsp extra-virgin olive oil and 1 tbsp unsalted butter in the same skillet over medium-high heat. Add 4 thick slices crusty sourdough bread and pan-sear for 2 to 3 minutes per side until deeply golden and crisp. Transfer to serving plates.

    5 min

    Tip: Pan-searing the sourdough in butter and oil forms a sturdy, architectural base that won't turn soggy under toppings.

  3. 3

    While the bread sears, gently mash 4 oz Gorgonzola Dolce in a small bowl until smooth. Immediately spread it evenly over the hot pan-seared sourdough slices so it gently melts into the crust.

    2 min

    Tip: Room temperature cheese spreads effortlessly without tearing the crust.

  4. 4

    Add remaining 1 tbsp extra-virgin olive oil to the skillet over high heat. Place 2 heads Radicchio di Treviso, cut into quartered wedges cut-side down in the pan. Sear untouched for 2 minutes until blistered and caramelized, then flip to sear the other cut side for 1 to 2 minutes. Season with a pinch of flaky sea salt.

    4 min

    Tip: High-heat pan-searing is load-bearing here—it tames radicchio's sharp bitterness into a complex, sweet smolder.

  5. 5

    Arrange seared radicchio wedges atop the Gorgonzola toast. Reduce heat to medium, then add remaining 1 tbsp unsalted butter, 1/4 cup dry vermouth, 1 tbsp honey, and 1 tbsp fresh sage leaves, thinly sliced directly to the pan. Simmer for 2 minutes, stirring, until reduced to a glossy, amber glaze. Season with freshly cracked black pepper.

    3 min

    Tip: Dry vermouth provides an essential botanical lift that balances the rich cheese.

  6. 6

    Spoon the warm vermouth-sage reduction over the radicchio crostoni. Scatter with 1/3 cup walnuts, roughly chopped and finish with a light dusting of flaky sea salt.

    2 min

    Tip: Serve immediately while warm with a chilled glass of dry white wine.

Chef's Notes

In Milan, weekend lunches are meant to feel understated yet decadent without consuming your afternoon. Radicchio di Treviso acts as the structural foundation here—its sturdy leaves handle high-heat pan-searing wonderfully, transforming bitter notes into buttery complexity. If Treviso isn't available, standard round radicchio cut into neat wedges works beautifully. Let the ingredients do the heavy lifting.

Frequently Asked Questions

How long does The Treviso Cloister: Pan-Seared Radicchio Crostoni with Gorgonzola Dolce and Vermouth Glaze take to make?

The Treviso Cloister: Pan-Seared Radicchio Crostoni with Gorgonzola Dolce and Vermouth Glaze takes about 27 minutes total. That includes 10 minutes of prep and 17 minutes of cooking.

How many servings does this recipe make?

This recipe makes 2 servings.

What skill level is needed for The Treviso Cloister: Pan-Seared Radicchio Crostoni with Gorgonzola Dolce and Vermouth Glaze?

This recipe is rated easy — it's beginner-friendly and straightforward.

What ingredients do I need for The Treviso Cloister: Pan-Seared Radicchio Crostoni with Gorgonzola Dolce and Vermouth Glaze?

The main ingredients are: Radicchio di Treviso (or standard Radicchio), crusty sourdough bread, extra-virgin olive oil, unsalted butter, Gorgonzola Dolce, dry vermouth, honey, walnuts, fresh sage leaves, flaky sea salt and black pepper.

What type of meal is The Treviso Cloister: Pan-Seared Radicchio Crostoni with Gorgonzola Dolce and Vermouth Glaze?

The Treviso Cloister: Pan-Seared Radicchio Crostoni with Gorgonzola Dolce and Vermouth Glaze is categorized as: lunch.