A satisfying cream soup made from the leftovers of Broccoli-Cauliflower Gratin. The measurements and servings will depend on the amount of leftovers. Serve as a side for a toasted sandwich for dinner or as a main dish for lunch with crackers.
Although this soup is intended to be a quick fix, a couple slices of sweet onion and minced garlic can be sautéed in olive oil in a skillet for 5-10 minutes and pureed with the leftovers as a substitute for the granulated onion and garlic. Optional garnishes: thinly sliced tart apple, garlic chive, fresh parsley, or fresh sage.