"This gourmet burger puts fast food versions to shame. Treat yourself to a burger done right with this recipe...."
INGREDIENTS
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3 Tbs. extra virgin olive oil
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1 1/2 lbs. onions, sliced into rings
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1 pinch Salt
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1 pinch freshly ground black pepper
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3 Tbs. seasoned rice vinegar
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1/2 lb. sliced bacon, frozen 1 hour
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1 1/2 lbs. ground chuck
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1 Tbs. worcestershire sauce
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2 Tbs. unsalted butter, melted
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4 slices extra-sharp cheddar
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4 hamburger buns