Combine beef, tomatoes, bell pepper (red or green), celery, potato,
carrot, onion, sweet potato, salt and tomato paste in 5-qt saucepan;
mix
well. Bring to a boil; reduce heat. Simmer, covered, for 1 hour,
adding
water if necessary. Stir in cayenne pepper and peanut butter.
Simmer for
1 hour longer or until vegetables and beef are tender. Add peas.
Simmer
for 5 minutes. Ladle onto large platter. Garnish with bell pepper
slices
and parsley. Serve this African beef stew over rice.