If your kids are peanut butter fans, they'll go nuts for this nutritious soup inspired by groundnut stew, a traditional African dish. The smooth, velvety texture appeals to those who are suspicious of lumps in their soup. Older children, however, may enjoy sprinkling on a few toppings such as sliced chicken or chopped peanuts for a slightly heartier lunch.
In a large soup pot, sauté the onions and garlic in the oil over medium heat for about 5 minutes. Add the tomatoes, chicken broth, water and yams. Cook over medium-low heat for 25 minutes or until the yams are soft.
Stir in the peanut butter, cayenne pepper and salt. Let cool for 30 minutes.
Puree the soup in a blender or food processor, then pour it back into the saucepan and warm. If desired, sprinkle the soup with the cooked chicken and crushed peanuts. Serves 6 to 8.