For an extra layer of flavor, try adding a pinch of red pepper flakes to the sauce for a more intense heat. If you prefer a thicker sauce, whisk together an additional teaspoon of cornstarch with a tablespoon of cold water and add it to the sauce during the last minute of cooking. These meatballs are fantastic served over jasmine rice, quinoa, or even noodles. They also make a great addition to lettuce wraps or sliders. Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. Reheat gently in a saucepan or microwave.