Horse in baked dish, no cover on top (7)
I believe the answer is:
piebald
'horse' is the definition.
'baked dish no cover on top' is the wordplay.
I cannot really see how this works, but
'dish' could be 'pie' (I've seen this before) and 'pie' is found in the answer.
The remaining letters 'bald' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Other definitions for piebald that I've seen before include "(Of horse) black and white in patches" , "(Of horse) patched with two colours" , "(Of an animal) marked in two different colours" , "Two-toned" , "(Horse) mottled with two colours" .)