Heat your oven to 450, and then get out a bowl.
Toss your radishes in olive oil, seasoning with salt and pepper.
Spread your radishes out on a baking sheet in a single layer, allowing them to roast for fifteen minutes. Stir halfway through.
Place a saucepan over medium heat, melting your butter and stir frequently to keep them from burning. Season with salt, and then continue to stir as it foams.
Serve your radishes with the browned butter.