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Ingredients:
- 4 large onions, thinly sliced
- 2 tablespoons butter
- 1 tablespoon olive oil
- 1 teaspoon sugar
- 1 liter vegetable broth
- 250 ml dry white wine
- 1 teaspoon dried thyme
- Salt and pepper to taste
- Baguette, sliced
- 200 g grated Gruyère cheese
Instructions:
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