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Gratin of Brussels Sprouts: A Culinary Hug from Belgium

My grandmother, a woman of formidable opinions and even more formidable cooking skills, held strong views on Brussels sprouts. “They’re not for boiling into mush,” she’d declare, her Belgian accent thickening with passion. “They’re for love.” And by “love,” she meant transforming them into something extraordinary. This gratin, a dish inspired by her teachings and perfected over years, is that love manifested. It’s creamy, savory, and guaranteed to convert even the staunchest Brussels sprout skeptic.

Recipe Overview

Prep Time: 15 minutes
Cook Time: 20 minutes
Total Time: 35 minutes
Servings: 4
Dietary Type: Comfort Food

Ingredients

1 1/2 cups heavy cream
1 1/2 – 2 lbs Brussels sprouts, small
Salt
3 ounces thick slab bacon, sliced into 1/2 x 1/4 inch strips
Freshly ground black pepper
1 pinch of freshly grated nutmeg
3 tablespoons grated Gruyere cheese

Equipment Needed

Medium-sized saucepan
Small saucepan
Small skillet
Paper towels
Medium-sized gratin dish

Instructions

Preheat your oven to 450°F (232°C). This high heat is key to getting that beautiful, bubbly, browned crust on top of the gratin.
Lightly butter a medium-sized gratin dish. This will prevent the sprouts from sticking and help with easy serving later.
In a small saucepan, simmer the heavy cream over medium heat until it is reduced to 3/4 cup, about 10 minutes. Keep a close eye on it; you want to reduce the cream, not scald it. The reduction concentrates the flavor and thickens the sauce, giving it a luxurious texture.
While the cream is reducing, prepare the Brussels sprouts. Trim the base of each sprout, discard any tough or discolored outer leaves, and rinse them well under cold water. Look for sprouts that are firm and tightly closed.
Place the prepped Brussels sprouts in a medium-sized saucepan. Add salt and cold water to cover them completely. The salt seasons the sprouts from the inside out as they cook.
Bring the water to a boil over high heat, then continue boiling the Brussels sprouts for just 1 minute. This brief blanching helps to tame the bitterness and ensures they cook evenly in the gratin.
Immediately drain the Brussels sprouts and refresh them under cold running water. This stops the cooking process and helps them retain their vibrant green color. Drain them thoroughly.
In a small skillet, sauté the bacon strips over medium heat until lightly browned and crisp, about 2-3 minutes. Don’t overcrowd the pan; cook the bacon in batches if necessary to ensure even browning.
Drain the cooked bacon on paper towels to remove any excess grease. Once slightly cooled, coarsely chop the bacon.
Combine the blanched Brussels sprouts and chopped bacon in the buttered gratin dish. Season generously with salt, freshly ground black pepper, and a pinch of freshly grated nutmeg. The nutmeg adds a warm, subtle spice that complements the other flavors perfectly.
Pour the reduced cream evenly over the Brussels sprouts and bacon mixture. Make sure the cream reaches all the sprouts.
Sprinkle the grated Gruyere cheese evenly over the top of the gratin. Gruyere melts beautifully and adds a nutty, complex flavor to the dish.
Bake in the preheated oven until the gratin is nicely browned and bubbly, and the top is crispy, about 15 minutes. Keep an eye on it; ovens can vary, and you want to avoid burning the cheese.
Remove from the oven and let stand for a few minutes before serving. This allows the gratin to set slightly and the flavors to meld together.

Expert Tips & Tricks

Choosing the Right Sprouts: Smaller Brussels sprouts tend to be sweeter and less bitter than larger ones. Look for sprouts that are firm, tightly closed, and a vibrant green color.
Parboiling Perfection: Don’t overcook the Brussels sprouts when parboiling. A minute is all you need to soften them slightly and reduce any bitterness.
Bacon Boost: For an extra layer of smoky flavor, consider using smoked bacon or pancetta.
Cheese Variations: While Gruyere is classic, you can experiment with other cheeses like Fontina, Emmental, or even a sharp cheddar for a bolder flavor.
Make-Ahead Magic: You can assemble the gratin ahead of time and store it in the refrigerator for up to 24 hours. Add a few minutes to the baking time if baking from cold.

Serving & Storage Suggestions

Serve the Gratin of Brussels Sprouts hot and bubbly, straight from the oven. It makes a wonderful side dish for roasted meats, poultry, or fish. It’s also delicious on its own as a light lunch or vegetarian main course.

To store leftovers, let the gratin cool completely before transferring it to an airtight container. Store in the refrigerator for up to 3 days.

To reheat, preheat your oven to 350°F (175°C). Place the gratin in an oven-safe dish and bake until heated through, about 15-20 minutes. You can also reheat it in the microwave, but the texture may not be as crispy.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	487 kcal	N/A
Calories from Fat	405 g	83%
Total Fat	45.1 g	69%
Saturated Fat	24.9 g	124%
Cholesterol	142.2 mg	47%
Sodium	263.5 mg	10%
Total Carbohydrate	14.8 g	4%
Dietary Fiber	4.4 g	17%
Sugars	3.1 g	N/A
Protein	10.1 g	20%

Note: Nutritional information is an estimate and may vary based on specific ingredients and preparation methods.

Variations & Substitutions

Vegetarian Version: Omit the bacon for a vegetarian option. Consider adding a handful of toasted walnuts or pecans for added texture and flavor.
Dairy-Free: While it will alter the flavor significantly, you can substitute the heavy cream with full-fat coconut milk or cashew cream. Use a dairy-free cheese alternative or nutritional yeast for a cheesy flavor.
Spicy Kick: Add a pinch of red pepper flakes to the cream sauce for a touch of heat.
Herbaceous Twist: Sprinkle some fresh thyme or rosemary over the gratin before baking for an aromatic flavor boost.

FAQs (Frequently Asked Questions)

Q: Can I use frozen Brussels sprouts?
A: While fresh Brussels sprouts are preferable, frozen can be used in a pinch. Thaw them completely and pat them dry before using. You may need to reduce the parboiling time slightly.

Q: My Brussels sprouts are very bitter. What can I do?
A: Parboiling helps to reduce bitterness. Also, look for smaller Brussels sprouts, as they tend to be less bitter than larger ones. Adding a touch of sweetness, like a drizzle of maple syrup, can also help balance the flavors.

Q: Can I use a different type of cheese?
A: Absolutely! Gruyere is a classic choice, but you can experiment with other cheeses like Fontina, Emmental, or even a sharp cheddar.

Q: How do I prevent the gratin from getting watery?
A: Make sure to drain the Brussels sprouts well after parboiling. Reducing the cream sauce is also essential for preventing a watery gratin.

Q: Can I add other vegetables to this gratin?
A: Yes, feel free to add other vegetables like chopped leeks, shallots, or mushrooms to the gratin. Sauté them along with the bacon before adding them to the dish.

Final Thoughts

This Gratin of Brussels Sprouts is more than just a side dish; it’s a warm, comforting embrace on a plate. It’s a testament to the transformative power of simple ingredients and a little culinary love. I urge you to try this recipe, share it with your loved ones, and perhaps even create your own variations. Whether you’re a Brussels sprouts aficionado or a reluctant convert, I’m confident that this gratin will win you over. Serve it alongside a perfectly roasted chicken or a hearty beef stew for a truly unforgettable meal. Bon appétit!

Gratin of Brussels Sprouts Recipe