How to Make It
Preheat the oven to 425°. Line a large rimmed baking sheet with parchment paper and arrange the bacon on it 3 inches apart. Set the mushrooms on the bacon slices. Top with the scallions and season with pepper. Roll up into tight cylinders and secure with toothpicks.
Roast the enoki bundles for 18 minutes, or until the bacon is browned and crisp. Drain the bundles on paper towels, remove the toothpicks and serve.