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Ingredients
US|METRIC
4 SERVINGS
- 4 yellow onions (large, thinly sliced, use mandolin for thin slices)
- 3 Tbsp. butter
- 1 Tbsp. cooking oil
- 1 tsp. kosher salt
- 1/4 tsp. sugar
- 1/2 cup dry white wine
- 1 Tbsp. Worcestershire sauce (/ Vegan Worcestershire sauce)
- 1 bay leaf
- 1 Tbsp. fresh thyme
- 1/2 tsp. crushed black pepper
- 3 cups broth (low sodium)
- 2 Tbsp. all purpose flour
- 1 baguette (crusty, thick slices)
- 1 1/2 cups shredded Gruyere cheese
- 12 slices swiss cheese
- 1 tsp. cayenne pepper (optional)
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