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How to keep apple and pear slices from browning.
Here's how to keep sliced apples from turning brown after you've cut into them:
core your apple, and then chop it into slices. Line the slices up on a non-stick baking tray, and sprinkle lightly with cinnamon, then put in the oven at 200 degrees for 15 minutes, or until the natural sugars have caramelized and the apple slices have turned a golden brown.