This soup is an American take on the classic French Onion soup. With the addition of heavy cream, it has a little more fat but lots more flavor!
Step: 1
Preheat oven to broiler setting.
Step: 2
Melt butter in a saucepan over medium heat. Add onions and cook until softened, 5 to 8 minutes. Stir in the heavy cream and beef broth. Bring to a boil, then reduce heat to low and simmer, loosely covered, for 20 minutes. Season with salt and pepper, to taste.
Step: 3
Top each slice of bread with one slice of provolone and one slice of Swiss cheese; place on a cookie sheet. Broil on top oven rack until the cheese browns and the edges of the bread are crispy, 3 to 5 minutes.
Step: 4
To serve, ladle soup into 3 bowls and top with one slice of the cheese-topped bread.
Per Serving: 1034 calories; protein 24.7g; carbohydrates 34.9g; fat 90.4g; cholesterol 303.7mg; sodium 1166.5mg.