How to Make It
Preheat oven to 400°F. Whisk together miso, oil, and vinegar in a medium bowl. Add radishes and shallot to bowl; toss to coat.
Transfer mixture to a baking sheet lined with parchment-paper, and roast in preheated oven until radishes are browned in spots, about 15 minutes. Coarsely chop radish tops, and add to baking sheet; toss to combine. Return to oven, and roast until radishes are fork tender, 5 to 10 more minutes.