There’s something magical about transforming humble vegetables into an elegant, crowd-pleasing appetizer. Roasted Brussels Sprout & Balsamic Crostini is a perfect example. Crispy toasted baguette topped with caramelized Brussels sprouts, a drizzle of tangy balsamic glaze, and a sprinkle of Parmesan creates a flavor combination that is both sophisticated and comforting. This dish works beautifully for cozy weeknight dinners, festive holiday gatherings, or as a standout appetizer for brunch. Inspired by the simple pleasure of roasting fresh vegetables to bring out their natural sweetness, this recipe celebrates seasonal flavors in a way that’s approachable, delicious, and visually stunning. Even Brussels sprout skeptics will be tempted to take a bite.
Ingredients
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1 pound Brussels sprouts, trimmed and halved
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3 tablespoons olive oil
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Salt and freshly ground black pepper, to taste
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1 teaspoon garlic powder
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1 teaspoon smoked paprika
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1 baguette, sliced into ½-inch thick rounds
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2 tablespoons olive oil, for brushing the bread
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½ cup balsamic glaze
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¼ cup grated Parmesan cheese or plant-based alternative
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Fresh thyme leaves, for garnish
Directions
1. Preheat the Oven
Begin by preheating your oven to 400°F (200°C). Setting the oven to the right temperature is a critical step because it ensures the Brussels sprouts will roast evenly, developing that irresistible golden-brown, caramelized exterior while remaining tender on the inside. A properly preheated oven also helps the crostini achieve a crisp texture without becoming overly dry. While the oven warms, you can take a moment to prepare your workspace, gather all the ingredients, and line your baking sheets with parchment paper or a silicone baking mat for easy cleanup. Preheating isn’t just about heat—it’s about giving your vegetables the perfect environment to transform in flavor and texture.
2. Prepare the Brussels Sprouts
Start by rinsing the Brussels sprouts under cool running water to remove any dirt or debris. Pat them dry thoroughly with a clean kitchen towel or paper towels, as moisture on the surface can prevent proper roasting. Next, trim off the tough stem ends of each sprout, and peel away any discolored or wilted outer leaves. These leaves can burn quickly in the oven, so removing them ensures a consistent roast. Once cleaned, slice the Brussels sprouts in half lengthwise. This creates a flat surface that allows the cut side to caramelize beautifully while keeping the interior tender. Uniform halving is key: uneven sizes may result in some sprouts cooking faster than others, leaving a mixture of burnt and undercooked pieces.
3. Season the Sprouts
Place the halved Brussels sprouts in a large mixing bowl. Drizzle them with 3 tablespoons of high-quality olive oil, which will help with browning and flavor development. Season with salt and freshly ground black pepper to taste, ensuring every sprout is evenly coated. For extra depth of flavor, add a teaspoon of garlic powder and a teaspoon of smoked paprika. These spices enhance the natural sweetness of the sprouts and introduce a subtle smokiness that pairs beautifully with the tangy balsamic glaze. Use your hands or a large spoon to toss the sprouts gently but thoroughly, making sure each piece is evenly coated. The seasoning step is crucial; well-seasoned sprouts deliver flavor in every bite, rather than just a touch of taste in a few pieces.
4. Roast the Brussels Sprouts
Spread the seasoned sprouts in a single layer on a baking sheet. Make sure they are not overcrowded; leaving a little space between each sprout allows hot air to circulate, which promotes proper caramelization rather than steaming. Roast in the preheated oven for 20 to 25 minutes. About halfway through the cooking time, flip the sprouts with a spatula to ensure even browning on all sides. You’ll know they’re done when the outer leaves are golden brown, slightly crispy, and the cut side has a rich caramel color. The aroma of roasted Brussels sprouts filling the kitchen is a sign that the flavors are developing beautifully. For a deeper caramelized flavor, you can roast them a few minutes longer, but keep a close eye to prevent burning.
5. Prepare the Crostini
While the Brussels sprouts roast, it’s the perfect time to prepare your crostini. Slice a fresh baguette into ½-inch thick rounds. The thickness is important: slices that are too thin may become too crunchy and break, while thicker slices might not toast evenly. Brush each slice lightly with olive oil on both sides. Arrange them in a single layer on another baking sheet, leaving a little space between each slice to ensure even toasting. Place the crostini in the oven for 5 to 7 minutes, or until they are golden brown and crisp. Check them frequently, as ovens vary and bread can go from perfectly toasted to burnt in a short time. Once done, remove them from the oven and allow them to cool slightly so they hold their crisp texture when topped.
6. Assemble the Crostini
Once the Brussels sprouts and crostini are ready, it’s time to assemble. Start by placing a generous layer of roasted Brussels sprouts on each toasted baguette slice. The amount can be adjusted depending on personal preference, but a hearty layer ensures each bite is flavorful and satisfying. Drizzle the sprouts lightly with balsamic glaze. The tangy sweetness of the glaze balances the earthiness of the sprouts, creating a harmony of flavors. Finish with a sprinkle of grated Parmesan cheese or a plant-based alternative for a touch of savory richness. The combination of textures—crispy bread, tender sprouts, and slightly sticky glaze—makes each bite complex and delicious.
7. Garnish and Serve
Finally, add fresh thyme leaves on top for both aroma and visual appeal. The fresh herbs add a subtle fragrance that complements the roasted flavors and brightens the presentation. Serve the crostini immediately to enjoy the contrast of textures—the crispness of the crostini, the soft yet caramelized Brussels sprouts, and the creamy, slightly salty cheese. These crostini are best enjoyed fresh, though leftover roasted sprouts can be reheated and placed on freshly toasted bread if needed. They are perfect for entertaining, brunches, or as a sophisticated snack for a cozy evening at home.
Prep Time, Cook Time, Total Time, Yield
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Prep Time: 15 minutes
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Cook Time: 30 minutes
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Total Time: 45 minutes
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Yield: 12–14 crostini
Tips for Perfect Brussels Sprouts
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Uniform Sizing: Halve the sprouts evenly to ensure even roasting.
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High Heat: Roasting at 400°F promotes caramelization and depth of flavor.
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Avoid Overcrowding: Spread sprouts in a single layer to prevent steaming.
Variations to Try
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Add Nuts: Toasted walnuts or pecans add a crunchy contrast.
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Cheese Options: Substitute Parmesan with crumbled feta or goat cheese for creaminess.
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Herbs: Swap thyme for rosemary or sage for a different aromatic twist.
Serving Suggestions
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Holiday Parties: A colorful, flavorful addition to your festive spread.
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Weeknight Snacks: Quick and satisfying with leftover roasted sprouts.
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Brunch Feature: Pair with fresh fruit, cheeses, and salads for a complete brunch plate.
Storage Tips
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Leftover Sprouts: Store in an airtight container in the fridge for up to 3 days. Reheat in the oven for best texture.
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Baguette: Keep toasted slices at room temperature for 1-2 days, or freeze. Assemble just before serving.
Why This Recipe Works
The magic lies in the balance of textures and flavors. Crispy bread meets tender, roasted sprouts, while tangy balsamic glaze and savory cheese elevate the dish. This crostini is both healthy and indulgent, making it ideal for entertaining or a special snack.
Health Benefits
Brussels sprouts are high in vitamins C and K, fiber, and antioxidants. Using olive oil and whole-grain bread keeps this appetizer wholesome without sacrificing flavor.
Frequently Asked Questions
1. Can I prepare this recipe ahead of time?
Yes, you absolutely can prepare parts of this recipe ahead of time, which makes it perfect for entertaining or busy evenings. You can roast the Brussels sprouts up to a day in advance and store them in an airtight container in the refrigerator. When ready to serve, simply reheat them in the oven for a few minutes to restore their warmth and texture. The crostini, or toasted baguette slices, can also be prepared ahead of time. Toast them lightly and store at room temperature in a sealed container to maintain crispness. To assemble, place the warm roasted Brussels sprouts on the crostini and drizzle with balsamic glaze just before serving. This method ensures that the bread remains crispy and the toppings are fresh and flavorful. Preparing ahead can save you stress on the day of a gathering while still delivering a restaurant-quality appetizer.
2. Can I make this recipe vegan?
Absolutely! Making this recipe vegan is simple and just as delicious. The Parmesan cheese can be replaced with a plant-based alternative, such as vegan Parmesan or a sprinkle of nutritional yeast, which adds a rich, nutty flavor. Olive oil and balsamic glaze already provide depth and richness, so you won’t miss the dairy. The roasted Brussels sprouts retain their natural sweetness and smoky flavor, which is enhanced by the balsamic glaze. This makes the crostini satisfying, flavorful, and completely plant-based, allowing vegans and non-vegans alike to enjoy this appetizer.
3. Can I use frozen Brussels sprouts?
Yes, frozen Brussels sprouts can be used, but fresh sprouts are preferred for the best flavor and texture. Frozen sprouts tend to release more moisture, which can prevent proper caramelization and may make them slightly mushy instead of crispy on the edges. If you use frozen Brussels sprouts, make sure to thaw them completely and pat them dry with paper towels before roasting. Drying them thoroughly helps achieve that desirable caramelized exterior while keeping the inside tender. Season and roast them exactly as you would fresh sprouts for the best results.
4. How do I make my own balsamic glaze?
Making a balsamic glaze at home is easy and adds a rich, tangy sweetness to your crostini. Pour about ½ cup of balsamic vinegar into a small saucepan and simmer over medium heat, stirring occasionally. Allow the vinegar to reduce until it thickens into a syrup-like consistency, which usually takes 10–15 minutes depending on the heat and pan size. The glaze should coat the back of a spoon and have a slightly sticky texture. Remove it from heat and let it cool slightly before drizzling over the crostini. Homemade balsamic glaze offers a fresher, more natural flavor compared to store-bought versions, and you can even add a small pinch of sugar or honey if you prefer a slightly sweeter glaze.
Roasted Brussels Sprout & Balsamic Crostini Recipe
- Total Time: 45 minutes
- Yield: 12–14 crostini 1x
Description
Transform humble Brussels sprouts into a gourmet appetizer with these Roasted Brussels Sprout & Balsamic Crostini. Perfect for cozy weeknights, festive gatherings, or elegant brunches, this recipe pairs caramelized sprouts with tangy balsamic glaze and crisp toasted baguette for a deliciously satisfying bite. Even Brussels sprout skeptics will fall in love with the balance of flavors and textures in each crostini.
Ingredients
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1 pound Brussels sprouts, trimmed and halved
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3 tablespoons olive oil
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Salt and freshly ground black pepper, to taste
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1 teaspoon garlic powder
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1 teaspoon smoked paprika
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1 baguette, sliced into ½-inch thick rounds
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2 tablespoons olive oil, for brushing the bread
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½ cup balsamic glaze
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¼ cup grated Parmesan cheese or plant-based alternative
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Fresh thyme leaves, for garnish
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Instructions
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Preheat the Oven
Preheat your oven to 400°F (200°C). Ensure the oven is fully preheated to allow the Brussels sprouts to roast evenly and develop a golden, caramelized exterior while remaining tender inside. -
Prepare the Brussels Sprouts
Rinse and trim the Brussels sprouts, removing any discolored outer leaves. Slice them in half lengthwise to ensure even roasting and a consistent texture throughout. -
Season the Sprouts
Place the sprouts in a large mixing bowl and toss with 3 tablespoons olive oil, salt, pepper, garlic powder, and smoked paprika. Make sure each sprout is evenly coated to maximize flavor. -
Roast the Brussels Sprouts
Spread the seasoned sprouts in a single layer on a baking sheet. Roast for 20–25 minutes, flipping halfway through, until golden brown and caramelized at the edges. -
Prepare the Crostini
While the sprouts roast, slice the baguette into ½-inch rounds. Brush each slice lightly with olive oil. Arrange on a baking sheet and toast in the oven for 5–7 minutes until golden and crisp. -
Assemble the Crostini
Place a generous layer of roasted Brussels sprouts on each toasted baguette slice. Drizzle with balsamic glaze and sprinkle with Parmesan cheese or plant-based alternative. -
Garnish and Serve
Top with fresh thyme leaves for aroma and visual appeal. Serve immediately to enjoy the perfect combination of crispy bread, tender sprouts, tangy glaze, and savory cheese.
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Notes
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For best results, ensure Brussels sprouts are halved evenly to roast uniformly.
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Avoid overcrowding the baking sheet to prevent steaming and ensure proper caramelization.
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Crostini can be prepared ahead of time; assemble just before serving to maintain crispiness.
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Substitute Parmesan with plant-based cheese or nutritional yeast for a vegan version.
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Leftover roasted sprouts can be stored in an airtight container in the fridge for up to 3 days and reheated in the oven.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
