Why You’ll Love This Brussels Sprouts Gratin
This Brussels sprouts gratin is a delicious side dish that combines tender, roasted Brussels sprouts with a creamy cheese topping for a satisfying meal option. It’s easy to prepare and brings together the earthy flavors of Brussels sprouts with the richness of Gruyere and Parmesan cheeses, making it a hit for holiday gatherings or everyday dinners. Whether you’re a busy parent looking for quick recipes or a food enthusiast exploring new flavors, this dish fits right in with its simple steps and adaptable nature.
As a roasted dish, Brussels sprouts gratin starts with sprouts cooked until crisp, then topped with a light cheese sauce that bakes to a brown and bubbly finish with a crispy crust. It often incorporates vegetables for added texture, enhancing its appeal during festive meals. In line with my blog’s focus on heartwarming, shareable foods, this recipe is perfect for potlucks and community events where everyone can dig in and connect over good food.
One reason you’ll love this Brussels sprouts gratin is its ease of preparation, which makes it ideal for busy weeknights. With minimal chopping and a straightforward baking process, you can have it ready in no time, freeing up your evening for family time. Additionally, the health benefits from nutrient-packed Brussels sprouts, like vitamins C and K, support overall wellness while the creamy cheese adds a comforting touch without overwhelming the dish.
Another highlight is its versatility, allowing for simple swaps to meet different dietary needs, such as vegan or gluten-free options. The distinctive flavor profile, with caramelized sprouts and a golden, cheesy crust, creates a balanced taste that’s both nutty and slightly sweet. Using ingredients like fat-free milk keeps it lighter, yet flavorful, making it a go-to for diet-conscious individuals and baking enthusiasts alike.
Jump to:
- Why You’ll Love This Brussels Sprouts Gratin
- Essential Ingredients for Brussels Sprouts Gratin
- Full Ingredient List
- How to Prepare the Perfect Brussels Sprouts Gratin: Step-by-Step Guide
- Preparing the Sauce and Finishing the Dish
- Dietary Substitutions to Customize Your Brussels Sprouts Gratin
- Protein and Main Component Alternatives
- Vegetable, Sauce, and Seasoning Modifications
- Mastering Brussels Sprouts Gratin: Advanced Tips and Variations
- Additional Pro Tips
- How to Store Brussels Sprouts Gratin: Best Practices
- FAQs: Frequently Asked Questions About Brussels Sprouts Gratin
- How do you make Brussels sprouts gratin from scratch?
- What type of cheese is best for Brussels sprouts gratin?
- Can Brussels sprouts gratin be prepared in advance?
- How can I make Brussels sprouts gratin healthier without losing flavor?
- What are some common mistakes to avoid when making Brussels sprouts gratin?
- Brussels Sprouts Gratin
- Ingredients
- Instructions
- Last Step:
- Notes
- Nutrition
- Did you make this recipe?
Essential Ingredients for Brussels Sprouts Gratin
When making Brussels sprouts gratin, selecting the right ingredients ensures a creamy cheese sauce and crispy topping that everyone will enjoy. This recipe focuses on fresh, simple components that highlight the natural goodness of Brussels sprouts while keeping the dish light and flavorful. Below is a comprehensive list of all the ingredients needed, based on a precise recipe that delivers great results every time.
Full Ingredient List
- 16 oz Brussels sprouts, trimmed and halved
- 1/4 teaspoon salt
- Pepper to taste
- Olive oil spray
- 1/2 tablespoon butter
- 1/3 cup chopped shallots
- 2 teaspoons all-purpose or gluten-free flour
- 3/4 cup fat-free milk
- 1/4 teaspoon nutmeg
- 1 teaspoon fresh thyme
- 1 tablespoon grated Parmesan cheese
- 2 ounces grated Gruyere cheese, divided
This structured list includes every item required for the recipe, ensuring you have exact measurements for easy shopping and preparation. These ingredients create a creamy cheese sauce that pairs perfectly with the crispy roasted Brussels sprouts.
For those looking to explore more vegetable-based sides, check out this guide to another creamy Brussels sprouts dish on our blog for additional inspiration.
How to Prepare the Perfect Brussels Sprouts Gratin: Step-by-Step Guide
Creating the perfect Brussels sprouts gratin involves a few simple steps that result in a dish that’s crispy on top and creamy inside. Start by preheating your oven, as this is key to achieving that desirable golden finish. This recipe, which uses fresh Brussels sprouts and a light cheese sauce, takes about 50 minutes total, with just 5 minutes of prep time, making it accessible for home cooks and busy professionals.
To begin, preheat the oven to 400°F and spray an 8″x12″ gratin dish with olive oil. Place the Brussels sprouts in the dish, season with 1/4 teaspoon salt and pepper to taste, spray lightly with olive oil, and bake in the lower third of the oven for 15 minutes. Then, toss the sprouts and bake for another 10 minutes to ensure they’re crisp and tender.
Preparing the Sauce and Finishing the Dish
While the sprouts are baking, melt 1/2 tablespoon butter in a medium nonstick pan over medium heat. Add 1/3 cup chopped shallots and cook until softened, about 4 to 5 minutes. Sprinkle 2 teaspoons all-purpose or gluten-free flour over the shallots and whisk to form a roux, cooking for 1 to 2 minutes. Slowly add 3/4 cup fat-free milk, stirring continuously until the sauce thickens, about 4 minutes.
Stir in 1/4 teaspoon nutmeg, 1 teaspoon fresh thyme, 1 tablespoon grated Parmesan cheese, and half of the 2 ounces grated Gruyere cheese until melted and combined. Pour this creamy cheese sauce over the baked Brussels sprouts and top with the remaining Gruyere cheese, then bake for 15 minutes until the top is browned and bubbly. This method creates a crispy topping that complements the vegetables’ texture, as often enjoyed in holiday meals.
For more tips on roasting vegetables, see this air fryer sweet potato recipe, which offers a similar approach to achieving crisp results.

Dietary Substitutions to Customize Your Brussels Sprouts Gratin
Customizing Brussels sprouts gratin for different dietary needs is straightforward and keeps the dish’s creamy cheese and crispy topping intact. Whether you’re adapting for a vegan diet or reducing calories, these swaps maintain the flavor while making it inclusive. For instance, using fat-free milk in the original recipe already helps keep things lighter, aligning with tips for a healthier version.
Protein and Main Component Alternatives
- Swap Brussels sprouts with cauliflower or broccoli for a different texture but similar nutrition.
- Incorporate cooked bacon or pancetta for added protein and flavor, or use smoked tofu for a vegan option.
- Replace fat-free milk with coconut milk or almond cream for dairy-free variations.
Vegetable, Sauce, and Seasoning Modifications
- Use leeks, shallots, or onions to deepen flavor profiles, building on the 1/3 cup chopped shallots in the recipe.
- Try different cheeses like cheddar or vegan alternatives instead of Gruyere and Parmesan for a fresh twist.
- Season with herbs such as thyme or nutmeg, as specified, to enhance the taste without extra sodium.
These changes allow you to tailor the gratin for personal tastes or restrictions, ensuring it remains a crowd-pleaser at gatherings.
Mastering Brussels Sprouts Gratin: Advanced Tips and Variations
To take your Brussels sprouts gratin to the next level, focus on pro cooking techniques that enhance its creamy cheese and crispy topping. For example, roasting the sprouts first, as in this recipe, adds caramelized depth that pairs well with the light cheese sauce. Halving them before roasting ensures even cooking, a key trick for achieving that perfect texture.
Flavor variations can include adding crispy pancetta or toasted walnuts for extra crunch, while experimenting with cheeses like blue cheese offers a unique twist. Presentation is important too serve in individual ramekins for an elegant touch at community events. For make-ahead options, prepare the dish without baking and refrigerate, then add extra cheese before cooking for a fresh golden finish.
This gratin provides a crispy, cheesy topping that works well with various vegetables, and using fat-free milk along with a moderate amount of cheese helps keep the dish lighter while maintaining flavor, as per expert advice.
Additional Pro Tips
- Achieve a perfectly browned crust by broiling for 1-2 minutes at the end.
- Blanch sprouts longer for softer results or roast them for added depth.
- Enhance with smoked paprika or fresh herbs to complement the nutmeg and thyme in the recipe.
How to Store Brussels Sprouts Gratin: Best Practices
Proper storage is essential to keep your Brussels sprouts gratin fresh and tasty after preparation. With a total cooking time of 45 minutes, it’s easy to make ahead, but following these steps ensures it retains its creamy cheese and crispy topping. Store leftovers to enjoy later without losing the dish’s appealing texture from holiday meals.
- Refrigerate in an airtight container for up to 3 days to preserve moisture.
- Freeze after cooling for up to 2 months, labeling with the date for convenience.
- Reheat in a 350°F oven for 15-20 minutes to keep the crust crunchy.
- For meal prep, assemble without baking and refrigerate, then bake fresh when needed.

FAQs: Frequently Asked Questions About Brussels Sprouts Gratin
How do you make Brussels sprouts gratin from scratch?
To make Brussels sprouts gratin, start by trimming and halving 1 to 1.5 pounds of Brussels sprouts. Roast them in the oven at 400°F (200°C) for about 20 minutes until tender and slightly caramelized. Meanwhile, prepare a creamy béchamel sauce by melting 2 tablespoons of butter, whisking in 2 tablespoons of flour, and slowly adding 1 cup of milk until smooth and thickened. Stir in 1 cup of grated cheese, such as Gruyère or cheddar, and season with salt and pepper. Combine the roasted Brussels sprouts with the sauce in a baking dish, top with additional cheese and breadcrumbs, and bake at 375°F (190°C) for 15-20 minutes until bubbly and golden.
What type of cheese is best for Brussels sprouts gratin?
For Brussels sprouts gratin, cheeses that melt well and offer rich flavor work best. Popular choices include Gruyère, cheddar, Parmesan, and Swiss cheese. Gruyère provides a nutty, creamy texture that complements the slight bitterness of Brussels sprouts. Cheddar adds sharpness and depth, while Parmesan offers a salty bite and crisp topping when mixed with breadcrumbs. Combining two cheeses, such as Gruyère and Parmesan, can enhance flavor and texture. Use about 1 to 1.5 cups of cheese in your gratin recipe for a balanced taste.
Can Brussels sprouts gratin be prepared in advance?
Yes, Brussels sprouts gratin can be made ahead of time. Prepare the roasting and béchamel sauce steps, assemble the gratin in a baking dish, cover it tightly with foil or plastic wrap, and refrigerate for up to 24 hours. When ready to serve, bake it at 375°F (190°C) for 25-30 minutes, removing the cover in the last 10 minutes to brown the top. This makes it convenient for holiday meals or weeknight dinners without sacrificing flavor or texture.
How can I make Brussels sprouts gratin healthier without losing flavor?
To lighten Brussels sprouts gratin, use low-fat milk or a milk alternative to prepare the béchamel sauce, and reduce the amount of cheese or choose lower-fat cheese options. Replace some or all of the heavy cream with Greek yogurt for added protein and creaminess. Use whole wheat breadcrumbs instead of white for extra fiber, and add garlic or fresh herbs like thyme and parsley to boost flavor without extra calories. Roasting the Brussels sprouts separately also enhances their natural sweetness, reducing the need for added fat.
What are some common mistakes to avoid when making Brussels sprouts gratin?
Avoid undercooking the Brussels sprouts before assembling the gratin, as this can result in a crunchy texture that clashes with the creamy sauce. Overcrowding the roasting pan can cause uneven cooking, so roast in a single layer. When making béchamel sauce, whisk constantly to prevent lumps and cook long enough to thicken properly. Using too much cheese can overpower the dish, while too little results in blandness—balance is key. Lastly, allow the gratin to rest for a few minutes after baking to set, making it easier to serve and enjoy.

Brussels Sprouts Gratin
🥦 Brussels Sprouts Gratin with Creamy Cheese and Crispy Topping combines tender roasted sprouts with a rich, cheesy sauce for a delicious side dish.
🧀 The crispy Gruyere and Parmesan topping adds texture and depth, making this gratin a crowd-pleasing addition to any meal.
- Total Time: 50 minutes
- Yield: 4 servings
Ingredients
– 16 oz Brussels sprouts, trimmed and halved
– 1/4 teaspoon salt
– Pepper to taste
– Olive oil spray
– 1/2 tablespoon butter
– 1/3 cup chopped shallots
– 2 teaspoons all-purpose or gluten-free flour
– 3/4 cup fat-free milk
– 1/4 teaspoon nutmeg
– 1 teaspoon fresh thyme
– 1 tablespoon grated Parmesan cheese
– 2 ounces grated Gruyere cheese, divided
Instructions
1-To begin: preheat the oven to 400°F and spray an 8”x12” gratin dish with olive oil. Place the Brussels sprouts in the dish, season with 1/4 teaspoon salt and pepper to taste, spray lightly with olive oil, and bake in the lower third of the oven for 15 minutes. Then, toss the sprouts and bake for another 10 minutes to ensure they’re crisp and tender.
2-Preparing the Sauce and Finishing the Dish: While the sprouts are baking, melt 1/2 tablespoon butter in a medium nonstick pan over medium heat. Add 1/3 cup chopped shallots and cook until softened, about 4 to 5 minutes. Sprinkle 2 teaspoons all-purpose or gluten-free flour over the shallots and whisk to form a roux, cooking for 1 to 2 minutes. Slowly add 3/4 cup fat-free milk, stirring continuously until the sauce thickens, about 4 minutes.
Stir in 1/4 teaspoon nutmeg, 1 teaspoon fresh thyme, 1 tablespoon grated Parmesan cheese, and half of the 2 ounces grated Gruyere cheese until melted and combined. Pour this creamy cheese sauce over the baked Brussels sprouts and top with the remaining Gruyere cheese, then bake for 15 minutes until the top is browned and bubbly. This method creates a crispy topping that complements the vegetables’ texture, as often enjoyed in holiday meals.
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.Notes
🥄 Halve Brussels sprouts before roasting to ensure even cooking.
🧈 Using fat-free milk and moderate cheese keeps the dish lighter while maintaining flavor.
🔥 The crispy cheesy topping adds contrast and texture that enhances the overall dish.
- Prep Time: 5 minutes
- Cook Time: 45 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1/2 cup
- Calories: 110
- Sugar: 3g
- Sodium: 135mg
- Fat: 5g
- Saturated Fat: 2.5g
- Carbohydrates: 12g
- Fiber: 3g
- Protein: 7g
- Cholesterol: 14mg





