1 bunch radishes, trimmedUnsalted butter, room temperature 1/4-inch-thick diagonal slices baguette Maldon sea salt or coarse kosher salt
Place radishes in medium bowl of ice water and chill at least 30 minutes and up to 2 hours. Drain radishes and slice thinly.
Spread butter generously over baguette slices and sprinkle lightly with sea salt or coarse kosher salt. Arrange radish slices atop buttered baguette slices and serve.