Directions
- 1Slice one yellow onion and one red onion.
- 2In a saucepan, cook the sliced onions in 2 tablespoons of oil over low heat for about an hour, stirring frequently, until nicely caramelized.
- 3Add 1 cup of dry sherry and 1 tablespoon of thyme; cook until almost dry.
- 4Add 1 cup of beef stock and cook until almost dry.
- 5Season with salt and pepper to taste.
- 6Grate Gruyère cheese.
- 7Slice bread.
- 8Assemble the sandwich: layer Gruyère cheese and the cooked onions on one slice of bread. Top with another slice of bread.
- 9Spread butter on the outside of the bread.
- 10In a frying pan, melt butter and cook the sandwich over medium heat until golden brown on both sides.
Ingredients
- 1 yellow onion
- 1 red onion
- 2 Tbsp oil
- 1 cup dry sherry
- 1 Tbsp chopped thyme
- 1 cup beef stock
- 0 salt
- 0 pepper
- 2 slices sliced white or sourdough bread
- 0 grated Gruyère
- 0 cooked onions
- 0 room temperature butter
Equipment
knifecutting boardsaucepanspatulagraterfrying pan
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