Name: Mushroom Brie Crostini Recipe
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: French-Inspired
Ingredients: 1 baguette, sliced into ½-inch rounds; 2 tablespoons olive oil; 2 tablespoons unsalted butter; 1 small shallot, finely chopped; 12 oz mushrooms (cremini or mixed), sliced; 2 garlic cloves, minced; 1 teaspoon fresh thyme leaves (or ½ teaspoon dried); Salt and freshly ground black pepper, to taste; 6 oz Brie cheese, sliced into thin pieces; Fresh parsley, chopped (for garnish)

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If there’s one party appetizer that always has guests swooning and asking for the recipe, it’s Mushroom Brie Crostini. This elegant yet unfussy dish combines a glorious trio: golden, crisp baguette rounds, a pillow of creamy Brie, and a generous heap of garlicky, thyme-flecked sautéed mushrooms. Whether you’re gathering for the holidays or planning a cozy date night at home, Mushroom Brie Crostini elevates any occasion with its rich flavors and comforting textures. It’s easy enough for a quick weeknight treat, but lush enough to impress—even if it’s just you and your favorite glass of wine.

Mushroom Brie Crostini Recipe - Recipe Image

Ingredients You’ll Need

The beauty of Mushroom Brie Crostini lies in its pure, wholesome ingredients. Each component is carefully chosen to enhance the dish—bringing buttery richness, earthy depth, and fresh pops of flavor. Here’s what you’ll want to have on hand:

Baguette: Choose a sturdy, crusty baguette for perfect bite-sized toasts that won’t get soggy.
Olive oil: Brushed on each slice, olive oil helps your crostini turn delectably golden in the oven.
Unsalted butter: Adds richness and a touch of indulgence to the mushroom topping.
Shallot: Minced shallot brings a subtle sweetness and aromatic base to the dish.
Mushrooms (cremini or mixed): Use a combination for more complex, earthy flavors. Slice evenly for consistent cooking.
Garlic cloves: Essential for savory depth—use fresh, minced garlic for the best results.
Fresh thyme leaves: Thyme adds a gentle, woodsy fragrance; use dried if needed, but fresh is magical here.
Salt and freshly ground black pepper: Enhance and balance all the savory elements—taste and adjust as you go.
Brie cheese: The heart of the crostini! Slice it thinly so it melts evenly over your toast.
Fresh parsley: A sprinkle on top adds not only a burst of color but a fresh, herbal finish.

How to Make Mushroom Brie Crostini

Step 1: Toast the Baguette

Start by preheating your oven to 375°F (190°C). Lay the baguette slices on a baking sheet in a single layer and give them a generous brush of olive oil. This step is key—not just for flavor, but for helping the bread crisp up beautifully. Toast them for 6 to 8 minutes until the tops are just turning golden. That touch of crunch will hold up to all the toppings to come!

Step 2: Sauté the Aromatics

While the crostini toast, get your skillet hot over medium heat and melt the butter. Add the finely chopped shallot and let it cook for about two minutes, just until it softens and goes translucent. That gentle sweetness sets the stage for the mushrooms to shine.

Step 3: Cook the Mushrooms

Tumble your sliced mushrooms into the skillet and let them cook for 6 to 8 minutes, stirring occasionally. The goal is to get them golden, tender, and for any liquid to have fully evaporated. Once they look nicely browned and smell incredible, add the minced garlic, thyme, a pinch of salt, and plenty of cracked black pepper. Give it another minute—the aroma will make it hard to wait.

Step 4: Assemble the Crostini

Now comes the fun part! Place a thin slice of Brie onto each toasted baguette round. Then, generously spoon the warm mushroom mixture right over the Brie. Stack the mushrooms a little high—no one has ever complained about too many mushrooms on Mushroom Brie Crostini!

Step 5: Warm and Melt

Return the assembled crostini to the oven for 3 to 5 minutes, just long enough for the Brie to get creamy and slightly oozy. Watch them closely—the Brie should soften but not completely melt off the edges. When they’re ready, take a moment to appreciate how irresistible they look on the tray.

How to Serve Mushroom Brie Crostini

Garnishes

A sprinkle of fresh parsley right before serving does wonders—it brings vibrant color and a fresh note that balances the richness. For extra flair, try a fine drizzle of balsamic glaze or a dusting of flaky sea salt if you’re feeling fancy. Sometimes the smallest touch makes the Mushroom Brie Crostini even more memorable.

Side Dishes

While these crostini can easily stand alone, they pair beautifully with crisp green salads dressed in a light vinaigrette. If you’re setting out a full appetizer spread, arrange them next to marinated olives, roasted nuts, or even prosciutto for a delicious contrast of textures and flavors. Mushroom Brie Crostini also goes hand-in-hand with a glass of dry white wine or sparkling bubbles.

Creative Ways to Present

Arrange the crostini on a wooden serving board for a rustic, inviting look, or line them up on a sleek platter for more formal occasions. For casual gatherings, pile them high in a bread basket lined with a cloth napkin. You can even stagger them with other crostini variations—think fig and goat cheese, or tomato and basil—creating a colorful, interactive tasting board that puts Mushroom Brie Crostini front and center.

Make Ahead and Storage

Storing Leftovers

If you have any Mushroom Brie Crostini left (which is rare!), store them in an airtight container in the fridge. They are best enjoyed within a day or two—longer and the bread may lose its crispness, but the flavors will still be lovely.

Freezing

It’s best not to freeze the fully assembled crostini, as the texture of both the bread and Brie can change. However, the sautéed mushroom mixture freezes very well. Let it cool, transfer to a container, and freeze for up to two months. When you’re ready, simply defrost and reheat before building fresh crostini.

Reheating

To revive leftover crostini, pop them into a 350°F (175°C) oven for 5 to 7 minutes. This helps to crisp the bread again and gently warm the Brie without drying everything out. Avoid the microwave if possible, as it can make the bread rubbery. For the mushroom topping alone, a minute or two in a skillet does the trick.

FAQs

Can I use a different type of cheese in Mushroom Brie Crostini?

Absolutely! While Brie is creamy and mild, goat cheese or Camembert can bring a lovely tang or extra earthiness to the crostini. Soft blue cheese is another adventurous option for bolder palates.

What mushrooms work best for Mushroom Brie Crostini?

Cremini mushrooms are classic, but mixing varieties such as shiitake, oyster, or even portobello can add more depth of flavor and a striking look. Just be sure to slice them evenly for consistent cooking and texture.

Can I prepare Mushroom Brie Crostini ahead of time?

The mushroom mixture is perfect for making ahead—sauté it a few hours in advance, then simply assemble and bake the crostini right before serving. For best texture, toast the bread and add the toppings just before your guests arrive.

How do I slice the Brie for this recipe?

Use a sharp knife for thin, even slices that will melt beautifully on top of the crostini. If your Brie is very soft, popping it in the fridge for 10 minutes can make slicing much easier and neater.

What makes Mushroom Brie Crostini a good choice for parties?

They’re the ultimate crowd-pleaser: elegant yet approachable, easy to eat by hand, and rich enough to feel like a treat. Plus, they can be varied to suit lots of tastes and dietary needs, making Mushroom Brie Crostini a true host’s dream.

Final Thoughts

If you’re looking for a dish that checks every entertaining box—beautiful, simple, and unbelievably delicious—don’t skip Mushroom Brie Crostini. There’s a reason they disappear in minutes! So next time you want to bring a bit of warmth and wow-factor to your table, give this recipe a try and watch how quickly it becomes your new favorite.