NAPOLEON

A rectangular piece of pastry with thin flaky layers and filled with custard cream

Else clues

• Author of the advice

• Brits call it vanilla slice

• Continental system proponent

• Creamy pastry

• Custard pastry

• Custardy dessert

• Emperor's pastry

• Exile at Elba

• Flaky pastry

• Josephine's mate

• Layered dessert

• Layered pastry

• Loser at Waterloo

• Pastry named for a French emperor

• Redhead born in Ajaccio

• Rich dessert

• The Little Corporal

• Waterloo loser

• Whom the Arc de Triomphe honors