The most common and most likely answer to this crossword clue is the 4 plus 5 letter word DROP SCONE
I've seen this crossword clue in The Daily Telegraph
D
R
O
P
S
C
O
N
E
More clues leading to the result DROP SCONE
- Pancake falls to earth once tossed
- Taste small cake for starters, one ... like this?
- Pancake given second prod almost collapsed
- Pancake — declines cold one
- Cake hits the floor before ice cream
- Lands on nose, gets eaten
- Cake falls onto ice cream
- Sinks part of Cornetto into pancake
- Declines ice-cream cornet and pancake
- Let’s shape go if you eat too many like this
Buddy explains!

The straight part
We know that "Pancake" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pancake = drop scone.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.