Havarti & Arugula Grilled Cheese with Caramelized Onions and Mushrooms

Despite the fact that I already finished my ENTIRE box of Valentine chocolates, I am still making some delicious carbs for you. We are back to new interesting sandwich combination, which just happens to be another grilled cheese as well. There is just something about a grilled cheese sandwich that makes me smile. Melty cheese, crispy bread, and in this case yummy sauteed vegetables inside. You can't beat it, especially on a cold winter day. 

Havarti & Arugula Grilled Cheese with Caramelized Onions and Mushrooms

4 slices of whole grain bread

1 tablespoon olive oil

1 tablespoon butter
1 tablespoon grainy mustard

1 medium yellow onion

2 cloves garlic

8-10 mushrooms (about 2 cups sliced)

4 sliced havarti cheese

2 cups arugula

Makes 2 Sandwiches

In a large pan heat olive oil over medium heat. Slice onion in half lengthwise, and then into 1/4 inch strips. Add to pan and sautee until soft. Reduce heat to low and cook for 20-30 minutes, stirring occasionally, until they begin to caramelize. 

While onions are cooking slice onions and mince garlic. After onions have begun caramelizing add mushrooms and stir. Return heat to medium and cook until mushrooms begin to release their juices. Add minced garlic and stir. Cook for about 5 more minutes and transfer veggies to a bowl. 

Using the same pan, without wiping down (you get great flavor with all those bits!)  heat to medium. To assemble sandwiches spread grainy mustard on one slice of bread,  add one slice of havarti cheese, a generous helping of vegetables, a cup of arugula, and the last slice of cheese. 

Butter your bread and add to pan, cooking until golden brown on both sides!