A delightful twist on the classic French dip, this soup combines rich flavors of caramelized onions, tender beef, and melted cheese for a comforting meal.
Heat a deep pot over medium heat and add the olive oil and butter.
Using a mix of oil and butter prevents the butter from burning while adding flavor.
Add the sliced onions and minced garlic to the pot. Season with salt and pepper.
Stir frequently to ensure even caramelization and prevent burning.
Add the thyme sprigs and cook until the onions are deeply caramelized.
Fresh thyme adds a fragrant aroma to the soup.
Pour in the white wine and scrape the bottom of the pot to deglaze.
Deglazing lifts the flavorful browned bits from the pot.
Add the beef stock and bring the soup to a boil. Reduce heat and simmer.
Simmering allows the flavors to meld together beautifully.
Place a slice of toasted baguette in each soup bowl and top with roast beef.
Toasting the bread prevents it from becoming too soggy in the soup.
Ladle the soup over the bread and beef, then sprinkle with grated cheese.
Broil the assembled bowls briefly for a melted, bubbly cheese topping.