Weight Watcher's Grilled Gruyere and Caramelized Onion Sandwich

1. 1

   Coat a large nonstick skillet with cooking spray; heat over medium heat.

2. 2

   Add onions; reduce heat to medium-low and cook, stirring often, until tender and golden brown, about 8 to 10 minutes.

3. 3

   Remove onions to a plate.

4. 4

   Lay 2 slices of bread on a work surface; spread each with 1 teaspoon mustard.

5. 5

   Top each with half of the cheese and onions; cover each with a second piece of bread.

6. 6

   Wipe skillet clean; heat over medium-low heat.

7. 7

   Coat sandwiches with cooking spray.

8. 8

   Cook until bottoms are browned, about 2 minutes.

9. 9

   Carefully flip sandwiches over and cook until browned on other side and cheese is melted, about 2 minutes more.

10. 10

    Slice each sandwich in half and serve.

11. 11

    Yields 1 sandwich per serving.

* Per serving · 4 servings · Values may vary.