PreparationRoast brussels sprouts: Preheat oven to 450°F with rack in upper third. Toss Brussels sprouts with oil, then arrange, cut sides down, in a 17- by 12-inch shallow baking pan. Roast, without turning, until outer leaves are tender and very dark brown, 40 to 45 minutes. Add butter and toss to coat. Make dressing: Stir together all dressing ingredients until sugar has dissolved. Make puffed rice while sprouts roast: Cook cereal, oil, and shichimi togarashi in a small skillet over medium heat, shaking skillet and stirring, until rice is coated and begins to turn golden, about 3 minutes. Transfer to a bowl and cool, stirring occasionally. Finish dish: Put Brussels sprouts in a serving bowl, then toss with just enough dressing to coat. Sprinkle with puffed rice and serve remaining dressing on the side. Cooks' notes:·Puffed rice can be made 3 days ahead and kept in an airtight container at room temperature. ·Dressing, without mint and cilantro, can be made 1 day ahead and chilled, covered. Bring to room temperature and add herbs before using. ·Brussels sprouts can be roasted 4 hours ahead. Chill, uncovered, until cool, then cover. Reheat, uncovered, in a 350°F oven until hot, 10 to 15 minutes.
PreparationRoast brussels sprouts: Preheat oven to 450°F with rack in upper third. Toss Brussels sprouts with oil, then arrange, cut sides down, in a 17- by 12-inch shallow baking pan. Roast, without turning, until outer leaves are tender and very dark brown, 40 to 45 minutes. Add butter and toss to coat. Make dressing: Stir together all dressing ingredients until sugar has dissolved. Make puffed rice while sprouts roast: Cook cereal, oil, and shichimi togarashi in a small skillet over medium heat, shaking skillet and stirring, until rice is coated and begins to turn golden, about 3 minutes. Transfer to a bowl and cool, stirring occasionally. Finish dish: Put Brussels sprouts in a serving bowl, then toss with just enough dressing to coat. Sprinkle with puffed rice and serve remaining dressing on the side. Cooks' notes:·Puffed rice can be made 3 days ahead and kept in an airtight container at room temperature. ·Dressing, without mint and cilantro, can be made 1 day ahead and chilled, covered. Bring to room temperature and add herbs before using. ·Brussels sprouts can be roasted 4 hours ahead. Chill, uncovered, until cool, then cover. Reheat, uncovered, in a 350°F oven until hot, 10 to 15 minutes.