ingredients
- servings: 5
- 3 tablespoons butter
- 3 tablespoons olive oil
- 6 white onions, sliced into thin rings
- 1 clove garlic, minced
- 1 pinch salt
- 1 1/2 teaspoons ground black pepper
- 1 tablespoon brown sugar
- 1 tablespoon dried thyme
- 1/3 cup
- 1 (32 ounce) carton beef stock
- salt and ground black pepper to taste
- 5 slices french bread
- 5 slices swiss cheese
- 1/4 cup shredded parmagiano-reggiano cheese
recipe
- preparation time: 10 mins cook time: 1 hr 25 mins
- melt the butter with the olive oil in a large pot over medium-low heat. add the onion slices and garlic to the pot; season with a pinch of salt and black pepper. cook the onions in the oil mixture until caramelized, stirring every 10 minutes to keep from browning too quickly, about 1 hour.
- stir the brown sugar and thyme into the caramelized onions; allow the sugar to melt into the onion mixture, about 2 minutes. pour the over the onions and bring to a boil while scraping the browned bits of food off of the bottom of the pan with a wooden spoon; continue simmering another 5 minutes. add the beef stock; cook together another 10 minutes. season to taste with more salt and pepper, if desired.
- preheat the oven's broiler.
- ladle the soup into 5 oven-safe crocks arranged a baking sheet. top the soup with a slice of french bread; cover with a slice of swiss cheese and sprinkle with some of the parmagiano-reggiano cheese.
- melt the cheese under the broiler until browned, 2 to 3 minutes.
ready time: 1 hr 35 mins
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