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Ingredients
- For Caramelized Onions:
- Ingredients
- 1/4 cup olive oil
- 3 large Spanish onions, peeled, cored, sliced
- 1/2 teaspoon kosher salt
- For Crostini:
- 1 teaspoon thyme leaves
- 1/2 cup beef stock
- 1/4 cup sherry
- 1 baguette, sliced into crostini and toasted.
- 1/2 cup shredded gruyere cheese
Details
Preparation time 5mins
Cooking time 20mins
Preparation
Step 1
Make the Caramelized Onions: In a 14-inch skillet, heat the olive oil over high heat and add the onions. Do not stir or shake the pan after adding onions; instead allow the heat of the pan to recover, because the onions have cooled the pan down. Listen for a sizzling noise to return. Once you hear a sizzle, season the onions with salt and stir; the onions on the bottom, which hit the pan first, should have already begun to brown. Turn the heat down to medium and keep cooking, stirring occasionally, for 15 minutes more, and then turn the heat down to low. Cook for another 30 minutes, stirring occasionally to keep the onions on the bottom from burning, until onions are completely soft and dark brown.
For the Crostini: In a medium saucepan, combine caramelized onions, thyme, beef stock and sherry over medium-low heat, season with salt and pepper, then cook, stirring occasionally, for 20 minutes.
To serve, place a large spoonful of onion mixture on top of each baguette slice and top with cheese.
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