INGREDIENTS
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12 slider buns, halved
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1 large onion, thinly sliced
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2 sprigs thyme
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kosher salt
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Freshly ground black pepper
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1 lb. deli roast beef
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12 slices provolone cheese
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1/4 tsp. garlic powder
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2 tbsp. unsalted butter, melted
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coarse sea salt
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1 tbsp. finely chopped parsley
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1 tbsp. unsalted butter
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1 Garlic clove, minced
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1 1/2 c. beef stock
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1 tbsp. Worcestershire sauce
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1/4 tsp. thyme leaves
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