petit four
US /ˈpet.i ˈfɔːr/
UK /ˈpet.i ˈfɔːr/

1.
a very small fancy cake, biscuit, or confectionery, typically decorated with icing and often served with coffee.
:
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The dessert tray featured an assortment of colorful petit fours.
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She carefully arranged the delicate petit fours on the serving platter.