INGREDIENTS
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2 tbsp. vegetable oil
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1 large onion, thinly sliced
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4 oz. baby bella mushrooms, sliced
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2 tbsp. unsalted butter
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1 1/2 granny smith apples, cubed into 1/2? cubes
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1 tsp. granulated sugar
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1 1/2 oz. grated gruyere cheese
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2 tbsp. chives, minced
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1/2 tsp. dried thyme
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1 package (1 pound) of frozen puff pastry, thawed
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1 egg, beaten