Carré d’Agneau en Croûte de Marrons Recipe

This Carré d’Agneau en Croûte de Marrons recipe transforms roasted rack of lamb into an elegant French holiday main course with a savory chestnut crust of shallot, parsley, thyme, lemon zest, breadcrumbs, and egg yolks. Featured on Dinner in Paris with host Romain Avril, this festive rack of lamb is served alongside Asperges à la Grenobloise, where tender asparagus is finished with nutty brown butter, capers, lemon, parsley, and crisp rustic croutons.

The Inspiration

Carré d’Agneau, or rack of lamb, is naturally suited to elegant French dining because its tender meat, dramatic presentation, and distinctive rib bones make it an impressive centrepiece before any additional garnish is added. In this chestnut-crusted rack of lamb recipe, the meat is elevated further with a savory marron crust that brings nuttiness, herbs, butter, and citrus to every slice.

On Dinner in Paris, host Romain Avril pairs the lamb with Asperges à la Grenobloise, creating a dish that combines the richness of roasted meat with a brighter vegetable preparation. The two elements complement each other naturally: the lamb and chestnut crust are warm, rich, and aromatic, while the asparagus is finished with lemon, capers, parsley, brown butter, and crisp bread.

Ingredients

For the Lamb

2 racks of lamb (about 8 ribs total each), frenched
2 tbsp olive oil
Salt and black pepper, to taste
Maldon sea salt, to finish

For the Chestnut Crust

250 g (8 oz) cooked/roasted chestnuts
40 g (3 tbsp) butter
1 large shallot, finely minced
2 tbsp parsley, finely chopped
Zest of 1/2 lemon
2 tsp thyme leaves
50 g (½ cup) breadcrumbs, plus more to adjust consistency
2 egg yolks
Salt and white pepper, to taste

Asparagus a la Grenobloise

450 g (1 lb) asparagus
60 g (4 tbsp) unsalted butter
1/4 cup capers, drained and roughly chopped
3 tbsp fresh parsley, finely chopped
Juice of 1 lemon
2 slices of rustic bread, cut into small cubes
2 tbsp olive oil
Salt and black pepper, to taste

Method

For the asparagus

Bring large pot of lightly salted water to boil over high heat. Trim woody ends from asparagus.
Thick asparagus may be peeled lightly near the base for more even texture.
Add asparagus to boiling water. Cook 2-3 minutes, depending on thickness.
Immediately transfer asparagus to ice bath. Cool completely. Drain thoroughly and pat dry.
Heat olive oil in sauté pan over medium heat. Add bread cubes and cook 4–5 minutes, stirring frequently.
Done when the bread is golden and crisp on all sides. Remove and reserve.
In the same, melt butter over medium heat.
Continue cooking 3–5 minutes. Butter will foam, then milk solids will begin browning.
Remove from the heat and add capers, parsley, salt, pepper and lemon juice.
Arrange asparagus neatly on platter or plates. Season with salt and pepper.
Spoon warm grenobloise garnish over top. Scatter croutons evenly over the top.

For the lamb

Remove lamb from refrigerator 30 minutes before cooking. Pat lamb dry thoroughly. Trim excess fat, if necessary.
Season evenly with salt and pepper. Preheat oven to 200°C / 400°F.
Heat olive oil in a cast iron pan over medium-high heat.
Sear lamb racks flesh side down for 2–3 minutes, flip and cook for another 2 minutes. Remove lamb from pan and cool slightly.
In the same cast iron pan over medium heat, melt the butter with any remaining lamb fat.
Add shallot and cook 3–4 minutes or until softened.
Meanwhile, place the chestnuts in a food processor and pulse for 1 minute or until fine.
Add chestnuts and breadcrumbs to the pan and stir to combine properly.
Remove the breadcrumb mixture from the pan and place in a mixing bowl.
Let it cool for 10 minutes and combine with cooked parsley, thyme, lemon zest, egg yolks, salt and white pepper.
Mix thoroughly. Press chestnut mixture evenly over fat/flesh side of lamb racks.
Press firmly so crust adheres during roasting.
Return lamb to the empty cast iron pas and place in oven.
Roast 12-15 minutes for medium-rare. The internal temperature should be 135F.
Remove from the oven and let rest 10 minutes loosely tented with foil.
Slice between bones into chops. Arrange on platter or plates.
Sprinkle Maldon sea salt over the flesh of the lamb.
Serve alongside Asparagus a la Grenobloise. Enjoy!

Serving Suggestions

This chestnut-crusted rack of lamb makes an elegant centrepiece for a holiday dinner, French-inspired celebration, special family meal, or sophisticated dinner party. For the strongest presentation, slice the rested rack cleanly between the bones and arrange several lamb chops on each plate with the chestnut crust facing upward so the golden, textured topping remains clearly visible.

Serve the Asperges à la Grenobloise alongside rather than underneath the lamb so the crisp croutons maintain their texture and the brown butter, capers, lemon, and parsley remain visually distinct. The bright green asparagus provides a beautiful colour contrast against the browned meat and earthy chestnut crust.

For a shared presentation, place the sliced lamb chops on a large platter and arrange the asparagus alongside. Spoon the Grenobloise garnish over the vegetables just before the dish reaches the table, then scatter the croutons over the top for the final crisp element.

Final Thoughts

This Carré d’Agneau en Croûte de Marrons recipe combines an elegant roasted rack of lamb with an earthy chestnut crust and bright Asperges à la Grenobloise, creating a complete French main course that feels particularly suited to holidays and special occasions.

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