Swiss Cheese & Onion Tart

A tantalizing tart for winter occasions!

18 minutesPrep time
40 minutesCook time
477 cal.Per serving


Oven, Baking pan, Pie pan, Parchment paper, Stovetop, Frying pan


Yellow onion

Step 1

Be sure to follow the puff pastry package instructions! Preheat the oven to 400°F. Peel & finely slice the onions. Melt a dab of butter in a pan over medium heat. Add the onions & a pinch of salt. Cook, stirring for 15 min.

Whole-grain mustard
Sour cream

Step 2

In a small bowl, whisk together the cream, mustard, salt & pepper.

Yellow onion
Swiss cheese
Puff pastry

Step 3

Shred the Swiss cheese. Lay the puff pastry on a parchment-lined baking sheet or in a pie pan. Spread the mustard-cream mixture over the base of the tart. Top with the onions, cheese & black pepper. Fold in or trim the edges of the crust.

Step 4

Bake the tart for 25 min at 400°F, or according to the package instructions.

Mixed baby greens

Step 5

Serve the tart with a bed of salad greens drizzled with your favorite dressing. Enjoy!

Nutrition facts

Average estimated amount for one serving

Energy477 cal.

On average, one serving of the recipe "Swiss Cheese & Onion Tart" contains 477 Energy, 32 g of Fat, 28 g of Carbohydrates, 16 g of Protein, 4 g of Fiber.

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Swiss Cheese & Onion Tart
Very easy