Possible Clues:

• Although it may deter, there's fat on it
• Covered, as scones and crumpets?
• Tried to soften (up)
• Complete filling for bread regularly covered with spread
• Like toast, typically, bachelor pronounced
• In bed, say, with spread on
• Covered with dairy spread
• Like some toast
• How to serve toast, say, when retired?
• Having put fat on, meet the deer head on