INGREDIENTS
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2 tablespoons vegetable oil
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1 medium onion, chopped
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16 ounces sliced mushrooms
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8 slices white bread, cubed in large pieces
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8 eggs
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1 cup heavy cream
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1 cup of milk
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1 teaspoon Dijon mustard
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1 teaspoon salt
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1/2 teaspoon pepper
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1/2 teaspoon thyme
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3 cups of shredded cheese (cheddar, Swiss, Monterey Jack, Gruyere)