A friend gave me two 5-gallon buckets of Golden Delicious apples awhile back. They are great for fresh eating, but I decided to dry some for hiking snacks. I dipped these in Concord grape juice after coring and slicing. (I still have some juice in the freezer that I made with grapes my dad gave me last year.) You don't really taste the grape flavor, but the purple color is fun.
I like to leave the skins on, so I used my Pampered Chef apple/pear corer to remove the core before slicing the apples, one at a time, in my Cuisinart food processor. I find this to be much quicker than using my old apple core/peeler/slicer and I like the apple rings it produces. The slices were about 1/4-inch thick.
Here's what they looked like going into the dehydrator...
and after ten hours of drying.
Here's the apple corer I used.
(I buy my Pampered Chef tools from Shelly Baird.)