Possible Clues:

• Dessert that's easy to prepare?
• An easy crossword, e.g.
• No-sweat job
• Easy task
• "Easy!"
• *Slice that's easy to make?
• Something easily done
• 'Easy!'
• Simple thing to do ... and what each starred clue's answer ends with?
• Easy-peasy ... or a hint to the start of 17-, 24-, 36- and 51-Across