Sweet kind of bed one can’t get into (5-3)
I believe the answer is:
apple-pie
'sweet' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for apple-pie that I've seen before include "Dish - order - bed" , "Fruit dessert (with order suggesting perfection?)" , "(Characteristically American) sweet" , "Common dessert" , "Sweet pastry dish" .)