Preheat oven to 375F. Place asparagus on baking sheet and drizzle with cooking oil. Toss to coat. Roast asparagus for 8-10 minutes or until pierces easily with fork. Timing depends on how thick the asparagus spears are.
While the asparagus is roasting, prepare the ginger miso sauce. In a small bowl, whisk together the remaining ingredients until smooth.
Pour over asparagus and serve.