Ingredients
Serves: 2
Prep Time: 5 mins
Total Time: 45 mins
1/2 tablespoon unsalted butter, softened, plus more for buttering bread
1/2 tablespoon extra virgin olive oil
1 medium onion, thinly sliced
4 slices whole wheat or sourdough bread
1 teaspoon fresh parsley, chopped
12 slices Swiss cheese, sliced very thin (use less if using regular slices)
warm beef stock for dipping, if desired
Preparation
