Possible Clues:

• Treat shaped like a 14-Across
• Party with loaf and cake, especially for Americans
• Coffee shop offering
• Ring in a coffee shop
• Fave food for Homer Simpson
• Party aficionado's American cake
• In the US, a sinker in leading edges of drag or net under trawler
• Snack for Homer Simpson
• Coffee intruder (var.)
• 'Life preserver,' in diner lingo