INGREDIENTS
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One 5 lb whole chicken
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Kosher salt
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Black pepper
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3 Tbsp olive oil, divided
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1 Tbsp butter
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4 oz baby portabella mushrooms, halved
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7-8 baby Yukon gold potatoes, diced
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1/4 a large Vidalia onion, quartered
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6 cloves garlic, peeled
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Juice of 1/2 a large lemon (or about 1 Tbsp bottled lemon juice)
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1 tsp tarragon
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1 1/2 Tbsp coarse ground mustard
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8 oz mozzarella cheese