French Dip Chicken Sandwich Recipe

Name: French Dip Chicken Sandwich Recipe
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American
Ingredients: 1/4 cup olive oil; 3 large Spanish onions, peeled, cored and sliced; 1/2 teaspoon kosher salt; 2 hero or hoagie rolls; 1 teaspoon prepared horseradish; 1/2 cup mayo; 1 cup caramelized onions (recipe above); 2 cups leftover roast chicken meat, shredded or chopped (recipe linked above); 6 slices provolone cheese; 1/2 cup arugula; 1 cup beef or chicken consommé (canned or boxed)