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 always soggy? ›

Steaming and boiling use moist heat, and moist heat can make Brussel Sprouts mushy and stinky—not a good combo. Give them the treatment they deserve by roasting them instead.

Why do you blanch brussel sprouts before roasting? ›

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. Blanching also softens them and preserves their beautiful bright green color.

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).

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.

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).

Why are brussel sprouts purple in the middle? ›

A Super Brief Purple Brussels Sprouts History

Food historians credit Dutch plant geneticist and botanist, C.N. Vreeken with developing purple Brussels sprouts. He did so in the early 1940s, by cross breeding green Brussels sprouts with red cabbage and voila! The purple Brussel sprouts was born!

What lays eggs on brussel sprouts? ›

This small (1/4") gray fly lays its eggs in the soil at the base of Brassica plants. When the larvae hatch they work their way down to the roots and tunnel into them. They live in the roots for 3 - 4 weeks and then go in to the soil to pupate.

What is the black stuff on Brussels sprouts? ›

Alternaria Leaf Spot and Blackleg are the fungal party crashers ruining your Brussels sprouts' vibe. These fungi love a moist environment and will exploit any weakness in your plants, be it a tiny wound or just the plant's natural openings.

Why aren't brussel sprouts bitter anymore? ›

Over the last twenty years, farmers have mellowed the "unpleasant" flavor of brussels sprouts by breeding a vegetable that contains fewer bitter compounds or glucosinolates. So, brussels sprouts just taste better than they used to when we were kids. The rub is that glucosinolates help protect sprouts against pests.

Why are my brussel sprouts not getting crispy in the oven? ›

Why Are My Brussel Sprouts Not Crispy? Spread them out into a single layer on a rimmed baking sheet to avoid overcrowding. If they're too close together, they'll steam instead of roast which stops the crisping process.

Is it better to parboil Brussels sprouts before roasting? ›

Unlike other vegetables, Brussels sprouts can be parboiled (even a day ahead) to reduce the roasting time without hurting their texture. That means the sprouts can be popped in the oven while the meat is resting before carving. Of course, if the main course is grilled or pan-cooked, the oven will be free for roasting.

What happens if you don t blanch brussel sprouts before freezing? ›

Can you freeze raw Brussels sprouts without blanching? You can you freeze uncooked Brussels sprouts, but you'll need to be aware that they may be a little softer than if you blanched them (so keep an eye on the cooking time). Plus, they won't keep in the freezer for as long.

Should I cut brussel sprouts in half before blanching? ›

Prepare the vegetables: leave them whole or cut them in half if large, then blanch them in salted boiling water until crisp-tender (al dente), about 4 min. Drain well, then serve.

Do sprouts need to be soaked? ›

Soaking: Think of soaking as the initial step before actually sprouting a legume, grain, nut or seed. Many people soak beans before cooking to cut down on cooking time and reduce compounds that may cause gasiness in our digestive systems (although it's not completely necessary, it's definitely recommended).

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

A splash of lemon juice, or even apple cider vinegar, works wonders on bitter sprouts. Another key ingredient is fat, which helps Brussels sprouts to crisp up. This is why it's so popular to render bacon fat and cook Brussels sprouts in it, then add the bacon bits back in at the end.

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.

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