Asparagus au Gratin with Mushrooms and Shallots

Name: Asparagus au Gratin with Mushrooms and Shallots
Total time: 45 min
Ingredients: 14 large, thick asparagus spears, tough ends removed and bottom half peeled; 4 tablespoons butter, divided; 2 medium shallots, peeled and thinly sliced, about ½ cup; 1 pint mushrooms, sliced, about 2 cups; 1 teaspoon kosher salt; ½ teaspoon coarse black pepper; 2 tablespoons grated Parmesan cheese; 2 tablespoons grated Gruyère cheese; ½ cup heavy cream

The Garden & Saucier

Asparagus au Gratin with Mushrooms and Shallots

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The Strategy:

A gratin is the ultimate vehicle for elevating fresh vegetables into a decadent, deeply comforting side dish. By quickly blanching thick asparagus spears, we lock in their vibrant green color before marrying them with earthy, butter-sautéed mushrooms and sweet shallots. Blanketed in heavy cream and crusted with a sharp blend of Parmesan and nutty Gruyère, this dish bakes into a bubbling, golden-brown masterpiece that effortlessly bridges the gap between fresh produce and rich indulgence.

Serves: 4 | Total Time: 45 minutes till it’s ready

Ingredients

Veggies and Butter

14 large, thick asparagus spears, tough ends removed and bottom half peeled
4 tablespoons butter, divided
2 medium shallots, peeled and thinly sliced, about ½ cup
1 pint mushrooms, sliced, about 2 cups

Sauce and Cheese

1 teaspoon kosher salt
½ teaspoon coarse black pepper
2 tablespoons grated Parmesan cheese
2 tablespoons grated Gruyère cheese
½ cup heavy cream

Overhead prep shot of asparagus, butter, shallots, mushrooms, salt, pepper, Parmesan, Gruyère, and heavy cream

Instructions

Blanch asparagus and prep veggies

Preheat your oven to 425°.
Coat a baking dish with vegetable oil spray. (If you have individual gratin dishes, this is the time to use them!)
Bring a pot of salted water to boil.
Prepare an ice bath.
Carefully drop the asparagus spears into the pot. Cook until tender, just a couple of minutes.
Transfer to the ice bath. Once the spears have cooled, drain them on paper towels.
Pat dry and cut them into 2-inch diagonal lengths.

Cook and assemble gratin

Melt 2 tablespoons butter in a sauté pan over medium heat.
Add the shallots and mushrooms and cook until tender, about 2 to 4 minutes.
Season with salt and pepper.
Add the shallots and mushrooms to the bottom of the baking dish. Place the asparagus on top.
Cut the remaining butter into small pieces and scatter them around the dish.
Sprinkle on the cheese.
Pour the cream around the edges of the casserole.
Bake until golden and bubbling, about 25 to 30 minutes.

Extreme close-up action shot pouring heavy cream around the edges of the asparagus gratin dish

Thing to Note:

An ice water bath is a bowl of water filled with ice and topped off with water. If you plunge a cooked or partially cooked veggie right from the heat into an ice bath, the cooking process stops, and the veggie keeps its bright color. Pretty smart, huh?

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The Heart of the Table

Bringing a bubbling, golden gratin to the table is like delivering a warm, edible hug to your guests. The sheer indulgence of baking vegetables in rich cream and melted cheese is a delightful, rebellious act of pure comfort, signaling to everyone at the table that tonight is about celebration, abundance, and letting your guard down.

An elegant, formal dinner table setting featuring Asparagus au Gratin with Mushrooms, with a dinner party in the background

Neighborly Grace

THE PRESENTATION: While individual gratin dishes are undeniably charming, a large, rustic oval baking dish placed directly in the center of the table on a thick wooden trivet creates an irresistible, communal centerpiece. Serve with a large, heavy silver spoon to ensure every guest gets a proper ratio of the golden, cheesy crust to the tender vegetables below.
THE POUR: A lightly oaked, full-bodied Chardonnay or a classic White Burgundy. The rich cream, butter, and earthy mushrooms demand a white wine with substantial weight and complementary notes of toasted oak and butter, without completely overpowering the delicate asparagus.
THE VIBE: Hearty and sophisticated. This is a show-stealing side dish meant for a grand holiday roast or an extravagant Sunday supper with close family and friends.

Chef’s Recommendations

The Potato on the Plate: New Potatoes with Truffle Oil, Parmesan Cheese, and Parsley
The Rich Finish: Chocolate Silk Pie
The Steak This Accompanies: Cast-Iron Steak with Thyme-Garlic Butter Baste
An Elegant Dinner Pour: Classic Sidecar

The Estate Table

Build tonight’s menu around this dish.

✦ Set the Table

Asparagus au Gratin with Mushrooms and Shallots

Asparagus au Gratin with Mushrooms and Shallots

The full recipe lives in the Vault

The Heart of the Table

Neighborly Grace

✨ The Gilded Swaps