Given the task definition and input, reply with output. In this task, you have to identify the named entities (NER) which are the ingredients required given its directions. Named entities are the names of the items without their quantity.

In a large sauce pan over medium heat, saute onion in hot oil until golden brown., In the microwave or in another saucepan, heat the broth until nearly boiling., Use a bit of the hot stock to thin the tomato sauce before adding it to the onions., Add remaining stock, tomatoes and 1/4 t. salt., Bring to a gentle boil., Thin the peanut butter with some of the hot cooking liquid., Add peanut butter to onion and tomato mixture, stirring to mix thoroughly., Reduce heat to a simmer., Add remaining ingredients except chicken and simmer, uncovered, until vegetables are bite tender, about thirty minutes., Stir in diced chicken and heat through., Check seasoning., Serve with tasty bread for sopping or over rice or couscous.
peanut oil, onion, chicken stock, tomato paste, tomatoes, salt, natural-style peanut butter, butternut squash, green bell pepper, cayenne pepper, chicken