This easy onion tart layers thinly sliced onions, Gruyère cheese, and thyme on puff pastry, then bakes them into an elegant appetizer perfect for the holidays, or any party you want to feel extra special! Onion tart: humble ingredients, delicious results! French cooking has the reputation of being fussy…and some of it is.I’ve traveled all over France in the last 25 years, however, and I can tell you that much of it really is simple.In fact, the French dishes I love most are the ones that transform a humble ingredient, like onions, into something special.

When we were in Alsace last year, I fell in love with tarte à l’oignon.It’s little more than pastry, onion, cheese, and cream, but WOW, the combined effect is spectacular.French onion soup is another example.

It doesn’t get more rustic than onions, cheese, and bread, yet the soup is so complex, delicious, and satisfying, it’s hard to want anything more.(If you’d like to try French-style cooking at home, check out my French Onion Soup recipe.It takes some time, but it’s easy and sooooo worth it!) How to Make a Faster Caramelized Onion Tart The key to developing onions’ flavor is the caramelization.

Unfortunately, traditional caramelized onions are time-consuming.It can take 30 minutes to 1 hour, depending on your batch size.To cheat the clock, I sliced the onions super thinly on a mandoline, layered them on a baking sheet with honey to mimic the carame

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