My sauce split while reheating creamed pearl onions. Can it be saved?

Usually, yes. Take the dish off the heat, whisk in a splash of cold cream or milk, and warm it gently without letting it boil. The split came from high heat, so a low, patient reheat with a little fresh dairy almost always brings the sauce back together.

Why are my pearl onions tender outside but firm in the middle?

They were large, or the simmer was short. Pearl onions cook by size, so test the biggest one with a paring knife before serving. Five more gentle minutes in the sauce fixes it, and sorting by size at peeling time prevents it.

Can I skip the broiler finish on creamed pearl onions?

You can, and the dish will still be good, but the Parmesan crumb is the contrast that makes people ask for the recipe. If the broiler is busy, toast the panko and Parmesan in a dry skillet for 3 minutes and scatter them over at the table.

How far ahead can I make creamed pearl onions?

Two days is the sweet spot. Cook through the simmer on day one, refrigerate in the baking dish, and keep the crumb mixture separate at room temperature. Reheat covered at 325 degrees for about 20 minutes on serving day, then add the crumb and broil.

Can I make the sauce with only milk and no cream?

Yes. Use 1 1/2 cups of whole milk in place of the cream and milk, and simmer the sauce one extra minute so the roux sets it properly. Stir in the Parmesan at the end for body, and keep any reheat gentle.

Creamed Pearl Onions, Golden First And Gratin Finished

Ingredients

Scale

2 pounds fresh pearl onions (about 60), or 2 pounds frozen peeled pearl onions, thawed
3 tablespoons unsalted butter, divided
2 tablespoons all-purpose flour
1 cup low sodium vegetable broth
1 cup heavy cream
1/2 cup whole milk
1 bay leaf
1 teaspoon fresh thyme leaves, plus more for serving
1/4 teaspoon freshly grated nutmeg
3/4 teaspoon kosher salt, plus more for the blanching water
1/2 teaspoon black pepper
1/4 cup finely grated Parmesan cheese, divided
1/3 cup panko bread crumbs
1 tablespoon chopped fresh parsley

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Instructions

For fresh onions, cut a small X in the root end of each one. Blanch in boiling salted water for 60 seconds, move to a bowl of ice water, and slip the skins off with your fingers. Spread on a clean towel and pat completely dry. Frozen onions only need thawing and the same thorough drying.
Heat a large, deep skillet over medium high heat. Add 2 tablespoons of the butter and, when it foams, add the onions in a single layer. Sear for 5 to 6 minutes, shaking the pan now and then, until golden on several sides. Tip the onions onto a plate.
Lower the heat to medium. Add the remaining 1 tablespoon of butter and whisk in the flour. Cook for 1 minute, whisking constantly, until it smells faintly nutty.
Pour in the broth slowly, whisking to a smooth sauce, then whisk in the cream and the milk. Add the bay leaf, thyme, nutmeg, salt and pepper. Simmer for 3 to 4 minutes, until the sauce coats the back of a spoon.
Return the onions to the pan and stir in half of the Parmesan. Simmer gently for 8 to 10 minutes, until a paring knife slides into the largest onion with only slight resistance. Fish out the bay leaf.
Heat the broiler. Tip the onions and all of the sauce into a shallow baking dish. Toss the panko with the remaining Parmesan and scatter it over the top.
Broil for 2 to 3 minutes, watching closely, until the crumb is deep golden. Rest 5 minutes, scatter with the parsley and extra thyme, and serve warm.

Author: Chef Rita
Prep Time: 25 minutes
Cook Time: 25 minutes

Nutrition

Serving Size: 3
Calories: 185
Sodium: 320
Saturated Fat: 8
Protein: 3
Cholesterol: 40