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.

Combine peanut butter, 3/4 cup margarine and sugar., Press mixture into 13 x 9 x 2-inch baking pan., Melt chocolate morsels with remaining 1/2 cup margarine; pour over mixture in pan. Refrigerate 15 minutes, then cut into bars., Yield:, 16 to 24.
peanut butter, margarine, powdered sugar, semi-sweet chocolate morsels