How to Make It
Preheat oven to 450°F. Combine small halved carrots, halved radishes, halved shallots, kosher salt, 1 1/2 tsp. olive oil, and 1/4 tsp. black pepper on a rimmed baking sheet. Bake until vegetables are golden, about 20 minutes. Whisk together sherry vinegar, chopped fresh oregano, 1 1/2 tsp. olive oil, whole-grain mustard, and 1/4 tsp. black pepper. Drizzle over vegetables. Serve warm.