@wion If you need to use it in writing and don't want to go with the French word, would "tray of appetizer bites" work?
You probably wanted to know for a different purpose.
And by the way of nothing, there's two more French words for appetizer: entrée and also amuse-gueule.

@wion I really liked the answer where someone said "it starts with horse", that'll make sure that I won't forget either. Gosh, just imagine if a horse came up and started to delicately nibble away at some bite sized snacks on a tray while checking out the rest of the room to see what the other trays offer... LOL.