For a deeper flavor, try using a red miso (Aka miso) instead of white miso. If you like a hint of sweetness, add a teaspoon of maple syrup or honey to the miso glaze. To prevent burning, ensure the Brussels sprouts are spread in a single layer on the baking sheet. Overcrowding will steam the sprouts instead of roasting them. These Brussels sprouts are best served immediately after roasting. However, leftovers can be stored in an airtight container in the refrigerator for up to 3 days and reheated in the oven or microwave.