Historical clue formulations

• Cheese plate staple — 2020-12-16
• What Polly wants — 2019-04-28
• Soup go-with — 2017-04-28
• Hors d'oeuvre staple — 2015-02-19
• "Polly want a ___?" — 2013-03-11
• Word that can follow the ends of 17- and 62-Across and 11- and 34-Down — 2005-01-18