Gruyere Panini

I just fell in love with gruyere cheese.
Even though I can't even pronouce it,
I can make great tasting recipes using
this soft, gooey and delishious cheese.
This is a simple one that's amazing.

Ingredients:
4 tablespoons extra-virgin olive oil
4 medium yellow onions, halved and sliced
2 tablespoons chopped fresh oregano
Kosher salt and freshly ground black pepper
8 oz. Gruyere cheese, grated
8 slices rye bread

Directions:
In a skillet over medium-high heat,
add the olive oil and onions and
stir vigorously to avoid scorching.
Add the oregano and season with salt and pepper.
Continue stirring until the onions
have a deep brown color.
Reduce the heat and continue to cook
until the onions are soft,
30 to 45 minutes. Set aside.
Preheat the panini grill
to medium-high heat.

For each sandwich:
Place 1/4 of the cheese on a slice of bread.
Follow with a generous amount of onions.
Close the sandwich and place on the panini grill.
Grill for 4-5 minutes until the cheese
is completely melted and the bread
is toasted with golden grill marks.