Answers are all words associated with sweet treats, i.e. desserts and tea-time treats.
1. The preserve one's been over water vapour (3 words)
2. It seems as if 50 came the day before Monday (3 words)
3. Look hard and you'll see if land is visible, then add a colour (2 words)
4. Sour yellow fruit with 21 on top is in a baked case (3 words)
5. Sounds as if a bird makes this steamed one! (2 words)