Cook quinoa in vegetable broth for extra flavor.
To freeze, arrange the uncooked meatballs on a parchment–lined baking sheet and freeze until firm. Transfer to a freezer–safe container or bag and freeze for up to 1 month. To cook, place on a foil- lined baking sheet and spritz with oil to encourage browning. Bake for 20–30 minutes in a 350-degree F (176-degree C) oven, or until warmed through, gently tossing/flipping at the halfway point to ensure even cooking.