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.

Mix first 3 ingredients in bowl., Beat in eggs., Mix in next 4 combined dry ingredients., Stir in pecans., Spread in greased 8-inch square baking pan., Bake at 350 for 40 to 45 minutes or until edges pull from side of pan., Cut into squares when cool. Yields 16 servings.
butter, sugar, vanilla extract, eggs, flour, cocoa, baking powder, salt, pecans