Leftover Meatloaf Panini with Caramelized Onions

1. 1

   Thinly slice sweet onions.

2. 2

   To caramelize onions, coat a medium-sized frying with a thin even coating of olive or vegetable oil.

3. 3

   Heat pan to medium; when oil is hot, add the onions and lower heat to a simmer.

4. 4

   Stir occasionally for about 15 minutes and sprinkle the salt over onions evenly.

5. 5

   Continue to cook on low for another 1/2 hour, stirring as little as possible.

6. 6

   This is when they will start to caramelize and turn golden brown.

7. 7

   Remove from heat and set aside.

8. 8

   To assemble the sandwich, lay a slice of meatloaf on each slice of bread.

9. 9

   Top with a slice of cheese and 1/4 cup of caramelized onions.

10. 10

    Butter the top and bottom of the bread and grill until golden brown and crunchy.

* Per serving · 4 servings · Values may vary.