Brussels sprouts have long lived under the shadow of culinary skepticism, often misunderstood and underestimated. Yet, when transformed through the magic of a gratin, these little green gems emerge as a comforting, creamy delight that even skeptics can’t resist. Easy Brussels Sprouts Gratin combines the natural earthiness of the veggie with luscious cheese and a golden, bubbling crust-turning a humble side into the star of any meal. Whether you’re a seasoned cook looking to elevate your vegetable game or a curious novice eager to explore new flavors, this dish promises a warm, satisfying experience that redefines what comfort food can be. Dive in and discover how simple ingredients come together in perfect harmony to create a vegetable gratin that’s anything but ordinary.
Easy Brussels Sprouts Gratin is a classic comfort dish that transforms humble vegetables into a rich, velvety delight bursting with flavor. Originating from traditional French gratins, this recipe blends the earthy crispness of perfectly cooked Brussels sprouts with a luscious, creamy cheese sauce, crowned by a golden, crunchy topping. Whether you’re a seasoned home cook or new to gratins, this recipe will inspire confidence and delight all who gather at your table.
Prep and Cook Time
- Preparation: 20 minutes
- Cooking: 35 minutes
- Total Time: 55 minutes
Yield
Serves 4 hearty portions
Difficulty Level
Easy – perfect for a cozy weeknight meal or festive gatherings
Ingredients
- 1 ½ pounds Brussels sprouts, trimmed and halved
- 3 tablespoons unsalted butter
- 3 tablespoons all-purpose flour, sifted
- 2 cups whole milk, warmed
- 1 cup sharp white cheddar cheese, shredded
- ½ cup Gruyère cheese, shredded
- 1 teaspoon Dijon mustard
- ½ teaspoon freshly grated nutmeg
- Salt and freshly ground black pepper, to taste
- ½ cup panko breadcrumbs
- 2 tablespoons Parmesan cheese, finely grated
- 1 tablespoon olive oil
Instructions
- Select and Prepare: Begin by choosing bright green Brussels sprouts with tightly closed leaves. Trim the stems and cut each sprout in half lengthwise. Rinse thoroughly under cold water, removing any yellow or damaged outer leaves. This ensures freshness and maximum flavor in your gratin.
- Blanch the Brussels Sprouts: Bring a large pot of salted water to a boil. Add the halved Brussels sprouts and blanch for 4 minutes until just tender but still vibrant. Drain immediately and plunge into an ice bath to stop cooking, preserving their bright color and texture.
- Make the Creamy Cheese Sauce: In a medium saucepan, melt the butter over medium heat. Gradually whisk in the sifted flour, cooking for 2 minutes to form a roux without browning it. Slowly add the warm milk, whisking constantly until the mixture thickens and coats the back of a spoon, about 6-8 minutes. Remove from heat and stir in the Dijon mustard, nutmeg, and the shredded cheddar and Gruyère cheeses. Season with salt and pepper. This silky sauce is the heart of your gratin, elevating the Brussels sprouts to rich indulgence.
- Combine and Layer: Preheat your oven to 375°F (190°C). Gently fold the blanched Brussels sprouts into the cheese sauce, ensuring even coating. Transfer the mixture to a buttered baking dish, spreading it out evenly to create a uniform layer ready for topping.
- Prepare the Crispy Topping: In a small bowl, stir together panko breadcrumbs, Parmesan cheese, and olive oil until the crumbs are lightly coated. This topping will bake into a golden, irresistibly crispy crust that contrasts beautifully with the creamy interior.
- Bake to Perfection: Sprinkle the breadcrumb mixture evenly over the Brussels sprouts. Bake in the preheated oven for 25-30 minutes, or until the topping is golden brown and bubbling around the edges. For extra crispness, broil for an additional 2-3 minutes, watching carefully to prevent burning.
- Rest and Serve: Allow the gratin to rest for 5 minutes before serving. This short pause lets the sauce settle slightly, making each spoonful perfectly luscious yet structured.
Chef’s Notes: Tips for Success
- Brussels sprouts can vary in size: For larger sprouts, quarter them to ensure even cooking and a tender bite.
- Cheese Variations: Swap Gruyère for Fontina or Emmental for a lighter, nuttier flavor profile.
- Make-ahead option: Prepare the gratin up to step 5, cover with foil, and refrigerate overnight. Bake just before serving, adding 5 minutes to the baking time.
- Breadcrumb alternatives: For a more rustic crunch, crushed toasted walnuts or pecans can replace panko.
- To avoid a watery gratin: Ensure sprouts are as dry as possible after blanching by patting gently with paper towels.
Serving Suggestions
Present this warming Easy Brussels Sprouts Gratin alongside a carved roast chicken or a rich mushroom stroganoff for a savory, comforting feast. Garnish generously with fresh thyme sprigs or finely chopped chives to add a fresh herbal note and vibrant color. A crisp green salad dressed with lemon vinaigrette will provide a refreshing counterbalance to the creamy richness.

| Nutrient | Per Serving |
|---|---|
| Calories | 350 kcal |
| Protein | 15 g |
| Carbohydrates | 20 g |
| Fat | 25 g |
For more vegetable comfort classics, check our Creamy Cauliflower Gratin. To deepen your understanding of cheese sauce techniques, visit Serious Eats on Béchamel Sauce.
Q&A
Q&A: Easy Brussels Sprouts Gratin: A Comforting Veggie Delight
Q1: What makes Brussels Sprouts Gratin such a comforting dish?
A1: Brussels Sprouts Gratin blends the earthy, slightly nutty flavor of tender Brussels sprouts with a luscious, creamy cheese sauce that’s baked to bubbly perfection. This mix of textures and warm, cheesy goodness transforms humble veggies into a cozy, soul-satisfying meal.
Q2: Is this recipe difficult for beginner cooks?
A2: Not at all! This gratin is surprisingly easy to prepare. With simple steps like blanching Brussels sprouts, whisking together a quick cheese sauce, and a short time in the oven, even first-timers can create a beautiful, restaurant-quality dish.
Q3: Can I use frozen Brussels sprouts, or do fresh ones work best?
A3: Fresh Brussels sprouts are ideal for the best texture and flavor, but frozen sprouts can definitely be used in a pinch. Just thaw and drain them well before starting, so your gratin doesn’t get watery.
Q4: What cheeses work best for the gratin sauce?
A4: Classic choices include sharp cheddar, Gruyère, or a combo of Parmesan and mozzarella. These cheeses melt beautifully, adding depth and that irresistible golden crust on top.
Q5: How can I add extra flavor or crunch to the gratin?
A5: Toasted breadcrumbs sprinkled over the gratin before baking add a delightful crunch. For a flavor boost, consider adding a pinch of nutmeg to the sauce or tossing in some crispy bacon bits or caramelized onions.
Q6: Is this dish suitable for a holiday dinner?
A6: Absolutely! Brussels Sprouts Gratin is a perfect side for festive meals, pairing wonderfully with turkey, ham, or roast beef. It’s elegant yet homey, a vegetable dish guests will actually look forward to.
Q7: Can I make this ahead of time?
A7: Yes, you can assemble the gratin a day ahead and refrigerate it. Just add the final cheese topping and bake it fresh before serving to keep everything warm, melty, and delicious.
Q8: Is this recipe vegetarian-friendly?
A8: Definitely! As long as you use a vegetarian-friendly cheese (without animal rennet), this gratin is a hearty, comforting vegetarian side that can please everyone at the table.
This Q&A highlights key tips and tricks, making your journey to a scrumptious Brussels Sprouts Gratin smooth and enjoyable. Get ready to wow your family with this veggie delight!
In Conclusion
With its golden, bubbly cheese crust and tender, flavorful Brussels sprouts nestled inside, this Easy Brussels Sprouts Gratin transforms a humble vegetable into a comforting delight that’s sure to win over even the most skeptical palates. Whether served as a cozy weeknight side or a festive centerpiece, this gratin brings warmth and richness to your table with minimal fuss. So next time you crave a dish that’s both nourishing and indulgent, let this recipe be your go-to-a simple, satisfying celebration of one of winter’s finest veggies.