The most common and most likely answer to this crossword clue is the 4 letter word FLAN
F
L
A
N
More clues leading to the result FLAN
- Bottomless side dish, sweet or savoury
- Supporter eating large pastry dish
- Dish of beef king cast aside
- Fellaini regularly dismissed; what a pudding!
- Tart on the side king dispensed with
- Pastry dish for lunch about noon, originally
- Tart left in cooler
- Manx side filled case
- Slice of meat cut for pastry dish
- Food enthusiast gobbles starter for lunch
Buddy explains!

The straight part
We know that "tart" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tart = flan.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 FLAN mean?
FLAN noun- Baked tart with sweet or savoury filling in an open-topped pastry case. (Compare quiche.)
- (Belize) A dessert of congealed custard, often topped with caramel, especially popular in Spanish-speaking countries.
- A coin die. (Compare planchet.)
- A fan of the U.S. TV series Firefly.