Brussels Sprouts Gratin Recipe with Cheese Brussels Sprouts Casserole (2024)

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by Diane

If you’re ever hankering for a great brussels sprouts recipe that’s beyond the classic roasted, this is it! This cheesy Brussels sprouts gratin casserole recipe is a holiday favorite!

Cheesy Brussels Sprouts Gratin

Roasted brussels sprouts are classic and wonderful but for some brussels sprouts haters, it’s just not enough to get them to appreciate the delicious bite of this controversial vegetable. Let’s introduce these folks to this wonderful brussels sprouts gratin recipe that’s cheesy, creamy, loaded with flavor and super delicious. If you love anything that’s a vegetable coming from the oven in casserole form, you’ll love this recipe for brussels sprouts gratin. Overtime we’ve made this, eaters have wowed over how delicious brussels sprouts can be.

Video: Best Brussels Sprouts Gratin Recipe

So if you’re looking for a different cheesy vegetable casserole other than scalloped potatoes or potatoes au gratin, this green veggie version will knock everyones socks off. We have some friends that actually love making this instead of potatoes au gratin because brussels sprouts are much less carbs. There’s a huge difference in carb count between potatoes and brussels sprouts. So this baked this may be less calories than potatoes, but still they’re decent in their own way and everyone once in a while, you have to splurge! Hope you enjoy! We’re obsessed with this recipe. More of our Brussels Sprouts Recipes Here and Great Vegetable Recipes Here.

Brussels Sprouts Gratin Casserole

Yield: 6

Prep Time: 10 minutes mins

Cook Time: 50 minutes mins

Total Time: 1 hour hr

Brussels sprouts sizes vary so much ranging from the size of a large egg to a small coin. Adjust your cooking times based on the size. Select all the same sizes for consistent cooking. If you like it extra cheesy, then just add more cheese!

5 from 11 votes

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Ingredients

2 pounds (910 g) Brussels sprouts , halved
3 Tablespoons (45 g) butter
2 Tablespoons (30 g) flour
1-1/4 cups (300 ml) milk
1 cup (100 g) grated parmesan cheese , extra for topping if you like
1/2 teaspoon (2.5 ml) kosher salt
1/4 cup (60 ml) mayonnaise
1/2 teaspoon (2.5 ml) garlic powder
black pepper to taste

Instructions

Pre-heat oven to 375° F.
Clean, trim stems of Brussels sprouts. Cut in half and keep all of loose leaves. Fill medium stock pot half way with water, bring to boil. Add Brussels sprouts, stirring in hot water and blanch quickly for about 2 minutes or until they turn bright green. Immediate drain. Do not cook Brussels sprouts too long and make them soft!
In large pan melt butter, then add flour and quickly stir with whisk to combine and remove clumps. Turn off heat.
Add milk, salt, cheese, mayo, garlic powder and black pepper. Stir until cheese is melted.
Add Brussels sprouts and combine with cheese mixture. Pour into baking dish and bake for about 40-50 minutes or until Brussels sprouts are tender.
If you want an extra cheese crusted, top with grated parmesan cheese before baking.

Video

Nutrition Information per Serving

Calories: 266kcal, Carbohydrates: 16g, Protein: 12g, Fat: 18g, Saturated Fat: 7g, Cholesterol: 34mg, Sodium: 600mg, Potassium: 622mg, Fiber: 5g, Sugar: 4g, Vitamin A: 1475IU, Vitamin C: 128.5mg, Calcium: 262mg, Iron: 2.4mg

Course: Main Course, Side Dish

Cuisine: American

Calories: 266

Other Great Recipes You Must Make!

Always a Classic –> Amazing Balsamic Roasted Recipe
Try Our —> Cheesy Garlic Parmesan Brussels Sprouts
Click Here for Our —> Sheet Pan Brussels with Bacon and Garlic.
A Winner! –> Skillet Shaved Brussels Sprouts with Sausage and Parmesan
Superpopular: Roasted Brussels Sprouts with Lemon Parsley Dressing is super fresh.
Below: Sriracha marinade on brussels sprouts? Yes! Recipe Here.

This recipe was originally published in 2017 and re-published in 2020 with updated video.

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posted in: 300+ Easy Meals, Casseroles, Holiday, Holiday-Christmas, Holiday-Easter, Holiday-Thanksgiving, One Pot Dishes, Paleo, Side Dishes, Skillet, Vegetables, Vegetarian 20 comments

Brussels Sprouts Gratin Recipe with Cheese Brussels Sprouts Casserole (7)

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20 Comments on “Brussels Sprouts Gratin Casserole”

Jeff Conard — October 11, 2017 @ 3:52 am Reply

I made this for dinner and it was easy and delicious! Will be making this again.
- Best Recipe Box — October 13, 2017 @ 11:17 am Reply
  
  Awesome. So glad you like it!
Sade Daniels — December 14, 2018 @ 12:22 pm Reply

Is there a good substite for the flour? I’m on Keto and not sure if Almond flour will mess the recipe up.
- Best Recipe Box — December 24, 2018 @ 4:53 pm Reply
  
  Hi Sade, we believe the Almond flour should work and don’t know why it shouldn’t. Please let us know if the almond flour works!
Helen — February 10, 2019 @ 7:10 pm Reply

This was surprisingly delicious to make. I don’t just make this for the holidays; this is now a regular part of our family dinners. We don’t get tired of it.
Andrea — February 10, 2019 @ 7:15 pm Reply

This is amazingly cheesy. It goes so well with the brussels sprouts. Thanks for a great recipe.
- Best Recipe Box — February 10, 2019 @ 7:34 pm Reply
  
  Thanks for making it and for the great feedback!
Ken — November 1, 2019 @ 4:29 pm Reply

I made this for dinner last weekend and everyone loved it! It’s a great way to introduce brussel sprouts to the family.
Andy — November 12, 2019 @ 4:22 pm Reply

I loved making this! It was so delicious!
Summayah — November 15, 2019 @ 4:23 pm Reply

So glad to see more brussels sprouts recipes on here! Your recipes are always on point! This one is a keeper and will be making it again soon.
Jenna — November 19, 2019 @ 4:24 pm Reply

Making this for Thanksgiving the year! It’s so good.
Sarah — January 19, 2020 @ 2:48 pm Reply

I would make this again but forgo the mayonnaise. It would save a lot of calories & not taste like ranch.
Kat Fargo — February 24, 2020 @ 12:47 pm Reply

Can a non-dairy milk be used with this recipe?
- Best Recipe Box — March 1, 2020 @ 6:05 pm Reply
  
  Hi Kat, we’ve not used any non-dairy milk options yet. But hopefully one of our readers here has and will share their input!
Janet Bradley — November 2, 2020 @ 6:50 am Reply

Is th Parmesan cheese fresh or can? Sounds great.
- Best Recipe Box — November 2, 2020 @ 3:54 pm Reply
  
  Hi Janet, you can use either one! But we prefer the fresh parmesan as it has more parmesan flavor. enjoy!
cathy — December 16, 2020 @ 9:01 am Reply

So I made this deliciousness again last night for dinner but decided to try it as a “casserole dish” I added 3 pieces of chicken tenderloins and it was amazing. Make sure to season your chicken.
- Best Recipe Box — December 19, 2020 @ 5:42 pm Reply
  
  Hi Cathy! Thanks for sharing and the addition of chicken sounds fantastic! What a great chicken brussels sprouts casserole idea!
Tee — June 30, 2021 @ 3:12 pm Reply

This is the BEST Brussels sprouts recipe ever! It never lasts long at the pot luck parties!!
I’ve given this recipe to friends and family! I give this 2000 stars!
- Diane — July 4, 2021 @ 11:13 am Reply
  
  Wow thanks Tee! We appreciate all the awesome stars!!!