Brown Butter Radish Crostini Recipe
This Brown Butter Radish Crostini recipe is a simple yet elegant appetizer featuring toasted baguette slices topped with nutty, whipped brown butter, thinly sliced fresh radishes, and vibrant finishing touches of flaky sea salt, fresh thyme leaves, and a squeeze of lemon. It combines creamy richness with peppery crunch for a perfect bite-size starter that’s quick to prepare and full of flavor.
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Total Time: 20 minutes
- Yield: 12 crostini 1x
- Category: Appetizer
- Method: Broiling
- Cuisine: American
- Diet: Vegetarian
Ingredients
Scale
Brown Butter
- 1/2 cup (1 stick) butter
- 1/2 tsp kosher salt
Crostini
- 1 baguette, sliced into 1 inch pieces
- Freshly ground black pepper, to taste
Toppings
- 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
Other
- Ice (for ice water bath)
- Water (for ice water bath)
Instructions
- Prepare Ice Water Bath: Fill a large bowl halfway with ice and water, then fit a medium-sized bowl inside it, ensuring the medium bowl stays completely dry. The ice water should come to a couple of inches below the top of the medium bowl to keep it chilled.
- Make Brown Butter: In a small saucepan over medium heat, melt the butter. Reduce heat to medium-low and cook, stirring frequently, until the butter develops a nutty aroma and the milk solids turn golden brown, about 5 minutes.
- Whip Butter: Carefully transfer the browned butter into the prepared medium bowl sitting in the ice water. Add the kosher salt and whisk constantly until the butter thickens, lightens in color, and achieves a whipped texture, about 3 minutes.
- Toast Baguette: Move the oven rack to the top position and turn the broiler on. Arrange the baguette slices in a single layer on a baking sheet. Broil for about 1 minute until the first side is lightly golden, then flip each slice and broil the other side until golden.
- Assemble Crostini: Spread a generous amount of the whipped brown butter on each toasted baguette slice. Season with freshly ground black pepper. Top each piece with thinly sliced radishes, a sprinkle of flaky sea salt, fresh thyme leaves, and a squeeze of lemon juice to finish.
Notes
- Be careful when browning butter, as it can quickly go from golden brown to burnt. Watch closely and stir frequently.
- Using a mandoline will help achieve uniformly thin radish slices for better texture and presentation.
- Adjust lemon juice and salt to taste for a balanced flavor.
- Serving immediately after assembling ensures the crostini remain crisp and fresh.
Keywords: brown butter, radish, crostini, appetizer, toasted baguette, easy appetizer, party food, broiled bread
