Brussels Sprouts Gratin

User Reviews

5

4 reviews
Excellent
  • Prep Time

    5 mins

  • Cook Time

    20 mins

  • Total Time

    25 mins

  • Servings

    6 people

  • Calories

    235 kcal

  • Course

    Side Dish

  • Cuisine

    French

Brussels Sprouts Gratin

This brussels sprouts gratin with cheese sauce is based on Julia Child's Choux de Bruxelles à la Mornay, Gratinés, and is a rich vegetable side dish made with homemade béchamel.

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Ingredients

Servings

Brussels Sprouts:

  • 1 ½ pounds brussels sprout stems removed, halved or quartered
  • 2 tablespoons olive oil Or swap 2 TB melted butter
  • ¼ teaspoon salt sea salt

Béchamel Sauce:

  • 2 cups milk
  • 3 tablespoons butter divided
  • 2 tablespoons flour Use AP gluten-free flour if needed
  • ½ cup swiss cheese Or use a mixture of both cheeses, freshly grated, especially Gruyere, or Parmesan cheese, divided
  • ¼ teaspoon salt sea salt
  • ¼ teaspoon cayenne pepper ground
  • ¼ teaspoon nutmeg freshly ground

Instructions

  1. Preheat oven to 425°F.Toss brussels sprouts with olive oil and sea salt. Arrange in a medium casserole dish (9x9 or 10x10), and bake 14-15 minutes, or until the sprouts have just turned bright green.
  2. While sprouts cook, make the béchamel sauce.Bring the milk to a boil in a saucepan. Alternatively, microwave the milk until it begins to simmer.Heat 2 tablespoons butter in a heavy bottomed pan over low heat. When the butter melts, stir in the flour. Continue stirring until the flour is incorporated with the butter and they begin to foam (but not brown). Allow the mixture to foam for 2 minutes.Begin slowly pouring in the hot milk, stirring or whisking constantly. The milk should be very hot (almost at boiling) when you pour it into the butter and flour.Bring the mixture to a boil and continue to boil for 1 minute. Turn off the heat.
  3. Stir ¼ cup of the cheese into the béchamel, and continue stirring until the cheese is melted.Add the sea salt, cayenne, and nutmeg. Stir again, and then taste. Add more seasoning if desired.
  4. When the sprouts are done roasting, fold half the sauce into the sprouts and stir.Pour the remaining sauce over the sprouts. Top with the remaining cheese.Cut the remaining butter into small cubes and dot the top.
  5. Move an oven rack to the position closest to the broiler.Position the casserole dish under the broiler and broil 3-5 minutes, or until the cheese is golden and bubbling.Serve immediately.

Notes

  • Partially Make Ahead:  This dish tastes best right after cooking, but can be partially prepped ahead.
  • For more tender brussels sprouts: Blanch in boiling water for 6-8 minutes before roasting. 
  • Béchamel troubleshooting:
  • Prepare the raw brussels sprouts by trimming and halving (or quartering) and store in the fridge for up to two days.
  • Prepare the béchamel sauce up to three days ahead and store in the fridge.  Reheat over low heat, adding more hot milk if needed.
  • My sauce is lumpy: If the milk is still almost boiling when added and if you stir or whisk vigorously, there shouldn't be lumps.  If there are, you can purée the sauce in a blender.
  • The sauce is too thick: With the heat on, whisk a little more hot milk back into the sauce.  (Gluten-free AP flour will sometimes thicken the sauce more than intended.)  Note that extra-thick sauce will work fine in this recipe, just make sure to spread it out evenly over the sprouts.

Nutrition Information

Show Details
Calories 235kcal (12%) Carbohydrates 17g (6%) Protein 9g (18%) Fat 16g (25%) Saturated Fat 8g (40%) Cholesterol 32mg (11%) Sodium 325mg (14%) Potassium 555mg (12%) Fiber 4g (16%) Sugar 7g (14%) Vitamin A 1270IU (25%) Vitamin C 96mg (107%) Calcium 212mg (21%) Iron 2mg (11%)

Nutrition Facts

Serving: 6people

Amount Per Serving

Calories 235 kcal

% Daily Value*

Calories 235kcal 12%
Carbohydrates 17g 6%
Protein 9g 18%
Fat 16g 25%
Saturated Fat 8g 40%
Cholesterol 32mg 11%
Sodium 325mg 14%
Potassium 555mg 12%
Fiber 4g 16%
Sugar 7g 14%
Vitamin A 1270IU 25%
Vitamin C 96mg 107%
Calcium 212mg 21%
Iron 2mg 11%

* Percent Daily Values are based on a 2,000 calorie diet.

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