The phrase "cooked a storm" is an informal expression, which means to cook a large quantity of food vigorously or to cook with great enthusiasm. Some antonyms for "cook a storm" are "cooked minimally," "cooked lightly," or "cooked negligibly." These phrases imply that the food has been prepared, but not with a lot of effort or time invested in the cooking process. Other antonyms for "cook a storm" can be "baked modestly" or "prepared simply," which suggest that the food has been cooked without any additional add-ons, yet still tastes good. In summary, antonyms for "cooked a storm" would be cooking with less intensity and minimal effort, resulting in a lesser quantity of food or a simple recipe.