I did this with rhubarb as I had no apples and it worked really well. DD and friend from UK are having second serves as I type this. We cannot get cookie mix here so I made my own with whizzed up oatmeal cookies plus the nuts as listed - totally success and totally delicious.
This recipe is listed on the www.bettycrocker.com website as a Prize-Winning Recipe for 2008! Thanks for posting and saving me the time.