Brown Butter Radish Crostini Recipe
Introduction
Brown Butter Radish Crostini is a simple yet elegant appetizer that combines nutty browned butter with crisp, peppery radishes on toasted baguette slices. This fresh and flavorful snack is perfect for entertaining or a light bite any time.
Ingredients
- Ice
- Water
- 1/2 cup (1 stick) butter
- 1/2 teaspoon kosher salt
- 1 baguette, sliced into 1-inch pieces
- Freshly ground black pepper
- 12 small red radishes, sliced very thin (preferably on a mandoline)
- Flaky sea salt, for serving
- Fresh thyme leaves, for serving
- 1/4 lemon, for serving
Instructions
- Step 1: Fill a large bowl halfway with ice water, then nest a medium bowl inside it. Ensure the inner bowl remains completely dry, with the water level a couple of inches below its rim.
- Step 2: In a small saucepan over medium heat, melt the butter. Reduce the heat to medium-low and cook, stirring frequently, until the butter smells nutty and the milk solids turn golden, about 5 minutes.
- Step 3: Carefully pour the browned butter into the prepared medium bowl. Add kosher salt and whisk constantly until the butter becomes thick, whipped, and has lightened in color, around 3 minutes.
- Step 4: Preheat the oven broiler with the rack in the top position. Arrange baguette slices in a single layer on a baking sheet. Broil the bread until lightly golden on one side, about 1 minute. Flip with tongs and broil the other side until golden.
- Step 5: Spread a generous amount of brown butter on each toasted baguette slice. Season with freshly ground black pepper. Top with thin radish slices, a sprinkle of flaky sea salt, fresh thyme leaves, and a squeeze of lemon juice before serving.
Tips & Variations
- Use a mandoline slicer for uniformly thin radish slices, which adds an elegant look and balances texture.
- Try substituting radishes with thinly sliced cucumbers or fennel for a different but equally refreshing twist.
- For extra richness, add a small smear of cream cheese or goat cheese under the brown butter.
Storage
Crostini are best enjoyed fresh to keep the bread crisp and radishes fresh. If you need to store, keep components separate: toasted bread in an airtight container up to 2 days, brown butter in the refrigerator for up to a week, and radishes wrapped in a damp paper towel in the fridge for up to 3 days. Assemble just before serving. Reheat bread briefly in the oven to revive crispness if needed.
How to Serve
Serve this delicious recipe with your favorite sides.
FAQs
Can I use a different type of bread for these crostini?
Yes, while a baguette is traditional and provides great texture, you can use other crusty breads like ciabatta or sourdough sliced thinly. Just make sure to toast it well so it holds up under the toppings.
How do I know when the butter is properly browned?
The butter is browned when it has a nutty aroma and the milk solids at the bottom of the pan turn a golden brown color. Be careful not to burn it; once browned, immediately remove from heat to stop the cooking process.
PrintBrown Butter Radish Crostini Recipe
Brown Butter Radish Crostini is a simple yet elegant appetizer featuring thinly sliced fresh radishes on toasted baguette slices spread with rich, nutty brown butter. Enhanced with flaky sea salt, fresh thyme, a touch of lemon, and a sprinkle of freshly ground black pepper, this crostini offers a perfect balance of textures and flavors with a hint of citrus brightness.
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Total Time: 20 minutes
- Yield: 12 crostini 1x
- Category: Appetizer
- Method: Broiling
- Cuisine: French-inspired
- Diet: Vegetarian
Ingredients
For the Brown Butter
- 1/2 cup (1 stick) unsalted butter
- 1/2 teaspoon kosher salt
For the Crostini
- 1 baguette, sliced into 1-inch pieces
- 12 small red radishes, sliced very thin (preferably on a mandoline)
- Freshly ground black pepper, to taste
- Flaky sea salt, for serving
- Fresh thyme leaves, for serving
- 1/4 lemon, for serving
Other
- Ice (for ice water bath)
- Water (for ice bath)
Instructions
- Prepare Ice Water Bath: Fill a large bowl halfway with ice and water. Place a medium bowl inside the larger bowl, ensuring the inner bowl remains completely dry and is surrounded by the cold water without touching the water. This setup will help cool the brown butter quickly after cooking.
- Make Brown Butter: In a small saucepan over medium heat, melt the butter. Reduce heat to medium-low and continue to cook, stirring frequently to prevent burning. Cook until the butter turns a nutty aroma and the milk solids turn golden brown, approximately 5 minutes.
- Whisk Brown Butter: Carefully transfer the hot butter to the dry medium bowl sitting in the ice water bath. Add the kosher salt and whisk constantly for about 3 minutes, until the butter thickens, lightens in color, and develops a whipped texture.
- Toast Bread: Move the oven rack to the top position and preheat the broiler. Arrange the baguette slices in a single layer on a baking sheet. Broil until lightly golden on one side, about 1 minute, then carefully flip the slices using tongs and broil until the other side is golden as well.
- Assemble Crostini: Generously spread the prepared brown butter on each toasted baguette slice. Season with freshly ground black pepper, then top with thinly sliced radishes, a sprinkle of flaky sea salt, fresh thyme leaves, and finish with a squeeze of lemon juice for brightness. Serve immediately.
Notes
- Using a mandoline to slice the radishes ensures thin, even slices that make the crostini more delicate and visually appealing.
- Make sure to whisk the butter vigorously after browning to develop the characteristic whipped texture and enhance flavor.
- You can substitute baguette with other crusty bread like ciabatta or sourdough if preferred.
- This appetizer is best served fresh to maintain the crunch of the bread and radishes.
- For a dairy-free version, consider using browned olive oil or a vegan butter alternative.
Keywords: brown butter crostini, radish appetizer, easy crostini recipe, broiled baguette, spring appetizer, nutty brown butter, fresh radishes
