It's sweet I'm cold outside, admits burglar evenly (5,5)
I believe the answer is:
brown sugar
'it's sweet i'm' is the definition.
I can't judge whether this defines the answer.
'cold outside admits burglar evenly' is the wordplay.
'cold' becomes 'brr'.
'outside' suggests removing the centre.
'admits' becomes 'owns' (I've seen this before).
'burglar evenly' becomes 'ugar' (I can't explain this - if you can you should give a lot more credence to this answer).
'brr' with its middle taken out is 'br'.
'br'+'owns'+'ugar'='BROWN SUGAR'
Can you help me to learn more?
(Other definitions for brown sugar that I've seen before include "Demerara or muscovado, for example" , "Kind of sweetener" , "Sweet thing" , "Eg, demerara" .)