Grilled Cheese Sandwiches

Ingredients:
2 T olive oil
3 large onions, sliced
salt and pepper
8 thick slices bread
1/4 cup butter, room temperature
2 cups grated aged cheddar

Preparing the grilled cheese sandwiches:
Heat the oil in a large skillet over medium heat. Saute the onions until soft and caramelized, about 25 minutes. Season with salt and pepper. Transfer the onions to a plate.

Generously butter both sides of each bread slice. In between two bread slices, pile the caramelized onions between two layers of cheese.

Heat a large skillet or griddle over medium-low heat. Cook the sandwiches, flipping once, until the cheese is melted and the bread is golden brown, 2 to 3 minutes per side.

Serves 4