The most common and most likely answer to this crossword clue is the 6 letter word SUNDAE
I've seen this crossword clue in Financial Times
S
U
N
D
A
E
More clues leading to the result SUNDAE
- Dessert taking half the weekend, we hear?
- Ice in the second half of the weekend, we hear
- “Ice cream on day off”, it’s said
- Afters – after Saturday, say?
- For part of the weekend, finally swapped dessert
- S of the day, say
- Sweet start to the week reportedly
- Used an odd dessert dish
- Reportedly, day of rest is sweet
- Dessert, when service should be given, we hear
Buddy explains!

The straight part
We know that "dessert" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dessert = sundae.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.
What does SUNDAE mean?
SUNDAE noun- A dessert consisting of ice cream with various toppings.
- A Korean dish made of the boiled or steamed intestines of a cow or pig, stuffed with various ingredients.