INGREDIENTS
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2 teaspoons olive oil
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4 cups chopped onion (about 2 large onions)
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3/4 teaspoon chopped fresh thyme
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1/2 cup light sour cream
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1/3 cup (about 1 1/2 ounces) grated Parmigiano-Reggiano cheese
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1/3 cup (3 ounces) 1/3-less-fat cream cheese
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1/3 cup reduced-fat mayonnaise
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1/4 teaspoon salt
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1/4 teaspoon freshly ground black pepper
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1/4 teaspoon hot pepper sauce (such as Tabasco)
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1/4 teaspoon Worcestershire sauce