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.

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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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Gluten-Free Recipes Sides Thanksgiving Central

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? ›

The soak time tenderizes the sprouts so the middles are softer. Don't worry, they won't be soggy! I would never do that to you. If, like me, you don't mind some chew to your sprouts, you don't need to soak the Brussels sprouts prior to cooking.

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.

Why are steamed brussel sprouts bitter? ›

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.

Should you cut Brussels sprouts in half before cooking? ›

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).

Should you boil Brussels sprouts before baking? ›

The trick is to simply know how to cook them properly and what flavors work with them. Your first step should always be to blanch the brussels sprouts. This is basically when they get submerged in boiling water just for a few minutes, not until they're fully cooked, but just enough to take away some of the bitterness.

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 lays eggs on brussel sprouts? ›

Have you ever wondered why those pretty white butterflies hang around the garden? These are one of the culprits that are doing in your cabbage, broccoli, cauliflower and brussels sprouts. These happy white butterflies (actually Imported Cabbage Worms) are laying eggs on your plants.

Is it better to roast Brussels sprouts whole or halved? ›

Place the sprouts cut-side down: Trim and halve the sprouts and roast them with their cut side against the baking sheet. The cut side will caramelize beautifully while the outer leaves crisp.

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.

Why do so many people not like Brussels sprouts? ›

This receptor is coded by a gene named TAS2R38, or the PTC gene. Even though PTC is not normally found in our food, it is very similar to chemicals found in cruciferous vegetables such as cabbage, broccoli, kale and Brussel sprouts. The PTC gene comes in 2 common forms – bitter-tasting or non-tasting.

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.

Why do my Brussel sprouts smell like vinegar? ›

Unpleasant, sour odors While cooked brussel sprouts already have a slight sulfur smell, the odor may turn sour the longer you keep them in your fridge. If you notice that your brussel sprouts have a different smell than they had before, play it safe and throw them away instead of risking getting sick.

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.

What do you soak brussel sprouts in to clean them? ›

Transfer the sprouts into the bowl of water and baking soda, ensuring there's enough liquid to cover them completely. If there's not, add more water and baking soda until they're covered. Then, let them soak for up to 10 minutes. Use a vegetable brush to scrub each sprout.

How do you get the bitterness out of brussel sprouts? ›

One technique for mitigating bitterness in Brussels sprouts is to blanch them. (This technique also works for making collard greens less bitter, as well as other greens.) Blanching involves adding your veg to boiling water for a brief period, then plunging it into an ice bath to stop the cooking process.

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