INGREDIENTS
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2.5 lb boneless chuck roast
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4 large onions thinly sliced
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4 cups beef broth
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2 tbsp or about 6 sprigs of fresh thyme
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2 tbsp butter
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4 cloves chopped garlic
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2 tbsp soy sauce
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1 tbsp worcestershire sauce
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4 slices thick cut bread
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4 slices provolone cheese
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1 cup grated gruyere cheese