Once the Brussels sprouts are golden and ready, remove them from the oven and add them to the prepared mayo-mustard sauce.

Mustard sprouts bring a bold, peppery flavor to your dishes, and growing them at home is a simple process. Soak mustard seeds ...

Make the dressing: In a medium bowl, whisk all ingredients except Brussels sprouts until blended. Add roasted Brussels sprouts and toss to coat. Serve at room temperature.