Caramelized Onion Mushroom Apple and Gruyere Bites 2 2 tablespoon olive oil 1 large onion, thinly sliced 4 oz. portabella mushrooms, sliced 2 tablespoon unsalted butter 1 1/2 granny smith apples, cubed into 1/2" cubes 1 teaspoon granulated sugar 1 1/2...
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