This French onion mushroom tart is layered with caramelized onions, tender sautéed mushrooms, plus creamy Gruyere cheese!

Onion tart is a delightful, super easy, healthy, & economical dinner.
With the arrival of colder weather, it is time to get back to comfort

This Onion Tarte Tatin is a delicious and elegant French dish of caramelized onions cooked in a rich balsamic sauce on a bed of flaky pastry