A traditional side dish from the Alsace region of France, in the country’s northeast corner near the German border, this rich onion tart pairs bacon and caramelized onions in a creamy sauce baked in a pie shell.

A traditional side dish from the Alsace region of France, in the country’s northeast corner near the German border, this rich onion tart pairs bacon and caramelized onions in a creamy sauce baked in a pie shell.

A slice of French bread layered with three varieties of cheese is broiled on top of individual servings of this soup of Spanish onions cooked in beef bouillon to form a rich crust.

A slice of French bread layered with three varieties of cheese is broiled on top of individual servings of this soup of Spanish onions cooked in beef bouillon to form a rich crust.