Brussels Sprouts Au Gratin - The Defined Dish Recipes (2024)

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This Brussels Sprouts Au Gratin recipe is such a fun side for Thanksgiving and the holidays that will take lovely in-season Brussels sprouts and make it an actual superstar side.Crispy Brussels sprouts in a creamy sauce that is topped with Gruyere cheese? What’s not to love?

Brussels Sprouts Au Gratin - The Defined Dish Recipes (1)

In this recipe, Brussels sprouts are simply roasted until golden brown, then topped in a delicious creamy sauce that I quickly made on the stovetop and sprinkled with some Gruyere cheese. The end result is seriously restaurant-worthy and perfect for changing things up on the Thanksgiving table along with these other Thanksgiving Delights. Or for For another simple Brussels sprouts recipe, try my Crispy Brussels Sprouts with Lemon-Basil Aioli or my Nuoc Cham Brussels Sprouts for an exciting twist.

Ingredients:

Brussels Sprouts Au Gratin - The Defined Dish Recipes (2)
  • Brussels Sprouts
  • Extra Virgin Olive Oil
  • Salt and Pepper
  • Salted Butter
  • Gluten-Free Flour
  • Dry White Wine
  • Heavy Cream
  • Chicken Broth
  • Ground Nutmeg
  • Garlic Powder
  • Freshly Grated Gruyere Cheese
  • Crisped Bacon

Brussels Sprouts Au Gratin: step-by-step

step one: prep the brussels sprouts

To start this recipe, cut the Brussels sprouts in half and remove any outer layers. Add to a baking dish and toss with olive oil, salt, and pepper! Next, place these in the oven to get nice and crisp while you prepare the rest of the recipe.

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step two: make the cream sauce

While the Brussels sprouts crisp up in the oven, make the delicious cream sauce. The cream sauce is brightened by a little white wine and has delicious earthiness from some nutmeg!

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step three: assemble and bake the Brussels Sprouts Au Gratin

Next, pour the cream sauce over the crisped Brussels sprouts then top with cheese. Transfer to the oven and bake until cheese is browned and bubbly.

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step four: top with bacon and enjoy!

Remove the baking dish from the oven, top with crumbled bacon, and enjoy!

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recipe faqs:

is this recipe gluten-free?

Yes! I use gluten-free flour in the sauce for this recipe but you can use regular all-purpose flour if preferred.

could this recipe be vegetarian?

Of course! While the crispy bacon is a delicious addition, feel free to omit it if preferred.

Can this recipe be made ahead?

Make ahead tip: This recipe can be prepared a day ahead of time. Reheat in a 350°F oven, uncovered, until warm throughout and crisp on top, 10 to 15 minutes.

Brussels Sprouts Au Gratin - The Defined Dish Recipes (7)

more thanksgiving recipe ideas

Sausage and Sage Stuffing

Roasted Garlic Whipped Potatoes

Homemade Green Bean Casserole

Charred Carrots with Herb Drizzle

I hope you all enjoy cooking this Brussels Sprouts Au Gratin! Comment below how the recipe works for you!

Brussels Sprouts Au Gratin - The Defined Dish Recipes (8)

5 from 11 votes

Brussels Sprouts Au Gratin

Prep: 10 minutes mins

Cook: 35 minutes mins

Total: 45 minutes mins

Servings: 8 people

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Ingredients

For the Brussels Sprouts:

  • 1.5 lbs brussel sprouts
  • 2 tbsp extra virgin olive oil
  • 1/2 tsp freshly cracked black pepper
  • 1 tsp kosher salt

For the Sauce:

  • 2 tbsp salted butter
  • 1.5 tbsp gluten-free flour I use Bob's Red Mill 1 to 1 baking flour. You can sub regular, all-purpose flour here.
  • 1/4 cup dry white wine
  • 1/2 cup heavy cream
  • 3/4 cup chicken broth
  • 1/4 tsp kosher salt
  • 1/8 tsp ground nutmeg
  • black pepper (a couple of cracks)
  • 1/2 tsp garlic powder
  • 1/2 cup freshly grated gruyere cheese
  • 3 strips bacon, cooked until crisp for topping

Instructions

  • Preheat oven to 400℉ and center rack in the center of the oven.

  • Peel the outer layers of the brussels sprouts and cut in half. (If really large, cut into quarters.)

  • Add the brussels sprouts to a 9×13 baking dish and drizzle with olive oil, salt and pepper. Toss until evenly coated and spread into an even layer.

  • Place into the oven and bake, without tossing and uncovered, until brussel sprouts are tender with golden brown edges, about 20 minutes.

  • Meanwhile, heat a medium-sized skillet over low heat with salted butter.

  • Once butter is melted, add the gluten-free flour and whisk until flour is well-combined with butter and starts to thicken. Cook, stirring and lightly toasting the flour, for 2 minutes but being careful not to burn.

  • While whisking, pour in white wine and whisk until well-combined.

  • Continue to whisk and slowly add the heavy cream then chicken broth until all is well incorporated into the mixture.

  • Continue to stir until thickened then turn off the heat.

  • Stir in kosher salt, ground nutmeg, black pepper and garlic powder into your sauce and whisk to combine. Set aside until the brussels sprouts are ready.

  • Once golden, remove brussel sprout from oven and pour your sauce evenly over the top. Top with shredded cheese and transfer back to oven. Cook until hot, bubbly and cheese is lightly browned. About 12-15 minutes.

  • Remove from oven and top with crumbled bacon. Serve and enjoy!

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Author: Alex Snodgrass

Servings: 8 people

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Welcome! I’m Alex.

I’m a food lover sharing healthy, simple, delicious, recipes from my kitchen to yours. Here you’ll find lots of Whole30, lots of healthy, and a little indulgence here and there because…it’s all about balance y’all!

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Brussels Sprouts Au Gratin - The Defined Dish Recipes (2024)

FAQs

Why do you soak brussel sprouts before cooking? ›

Not only can soaking make the centers more malleable, but the water that's absorbed into them will create a steaming action, whether you choose to roast, saute, or make your Brussels sprouts in your air fryer. The steam can help to ensure the cooking is even throughout the Brussels sprout.

Why do you put a cross in the bottom of brussel sprouts? ›

Some people swear by cutting a cross in the bottom of each sprout, which they believe allows them to cook all through – but it's not necessary, and you'll save time if you don't.

Why are my brussel sprouts soggy in the oven? ›

Not using enough oil.

The other secret to ridiculously crispy Brussels sprouts is tossing them in plenty of oil. We like to use olive oil, but plain vegetable oil is great too. If the sprouts are well-coated, they'll caramelize and char instead of simply softening in the oven.

Should you cut Brussels sprouts in half before cooking? ›

One of the most common ways to cut a Brussels sprout is in half or quarters. By doing so, you reduce the size of the sprouts, speeding up cooking.

How long should you soak Brussels sprouts in salt water? ›

Contributed by Whole Foods Market, Inc. To prepare, soak Brussels sprouts in a bowl of cold, salted water for 20 minutes. Preheat oven to 400°F.

Why is brussel sprouts controversial? ›

Surprisingly, it could be your genes that determine your feelings about these controversial little vegetables. A 2011 study by Cornwall College found that sprouts contain a chemical, similar to phenylthiocarbamide, which only tastes bitter to people who have a variation of a certain gene.

What gives Brussels sprouts a better taste? ›

In the late 1990s scientists identified specific chemicals, called glucosinolates, that made Brussels sprouts taste bitter. Plant breeders started growing old seeds, previously discarded for producing paltry harvests, to identify tastier versions with lower levels of these compounds.

What do brussel sprouts do to your body? ›

Eating Brussels sprouts along with other good sources of fiber — like other vegetables, fruits, and whole grains — can help you meet your fiber needs. Brussels sprouts are high in fiber, which can promote regularity, support digestive health, and reduce the risk of heart disease and diabetes.

When not to use brussel sprouts? ›

If any of the leaves have brown spots or are yellowing, it's a sign of early spoilage. If you remove the blemished leaves and the interior looks OK, you can still use the sprout. However, if the interior leaves are also showing blemishes or yellowing, it's best to toss it (or compost it, if you can).

What are the yellow eggs on my brussel sprouts? ›

These yellow eggs in clusters on the underside of brassicas leaves turn into very hungry caterpillars who then munch everything in sight so your plants will just look like a stalk. The last time I grew Brussels sprouts I didn't realise they had to be netted. Caterpillars started eating everything.

What is the fungus in brussel sprouts? ›

Diseases
  • Alternaria leaf spot (Black spot, Gray spot) Alternaria brassicae. ...
  • Black rot Xanthom*onas campestris. ...
  • Clubroot Plasmodiophora brassicae. ...
  • Downy mildew Hyaloperonospora parasitica. ...
  • Fusarium wilt (Yellows) Fusarium oxysporum. ...
  • Powdery mildew Erysiphe cruciferarum. ...
  • Sclerotinia stem rot (White mold) Sclerotinia sclerotiorum.

Why do brussel sprouts taste bad sometimes? ›

The bitter taste of Brussels sprouts comes from compounds called glucosinolates and their degradation products, he explains. These bitter tasting compounds are an important part of the plant's defence mechanism against leaf-eating enemies, such as insects, nematodes, slugs, and herbivores, like pigeons and deer.

Is it better to roast Brussels sprouts whole or cut in half? ›

To maximize the flat areas, which get the most crispy surface area, cut your Brussels sprouts in half. If your Brussels sprouts are very small, you can leave them whole (and if they are very large, quarter them).

Why do my Brussels sprouts taste weird? ›

If brussels sprouts taste bitter to you, you may have a gene that senses bitter compounds in brassicas. It is similar to the gene that makes cilantro taste like soap to the people who have it, and like a yummy herb to people who don't.

Should sprouts be soaked? ›

However, the natural agents that protect them from early germination can wreak havoc in our digestive system. Soaking and sprouting replicates germination, which activates and multiplies nutrients (particularly Vitamins A, B, and C), neutralizes enzyme inhibitors, and promotes the growth of vital digestive enzymes.

Do you need to soak sprouts? ›

The minimum time required for germination can vary depending on the temperature and moisture conditions, but typically it takes 3-4 days for green gram to germinate. However, it is recommended to soak the beans for a longer period of time, such as overnight or for up to 24 hours, for best results.

Why won't my Brussels sprouts get crispy? ›

Roast the Brussels Sprouts at high heat

If you don't hear them crisping up in the oven, add a little more oil and roast them for a few more minutes until your desire crispiness is achieved!

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