INGREDIENTS
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1 lb. ground beef
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1 tbsp. Worcestershire sauce
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1 tbsp. yellow mustard
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2 cloves garlic, minced
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kosher salt
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Freshly ground black pepper
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16 oz. baby bella mushrooms
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1 tbsp. extra-virgin olive oil
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6 slices cheddar, quartered
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Sliced cherry tomato, for garnish
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Sliced gherkins, for garnish