Yes, there are a lot of vitamins in the skins. I do the same thing with apple skins when making Apple Crisp. I put the peeled skins in my food processer and then sprinkle over the apples before adding the crumble topping.
That’s how you do it!
Last winter I would simmer whole unpeeled uncored apples in 1/4” water for twenty minutes. Sprinkle some nuts, salt and honey on top and eat. You could sprinkle granola on top to make a quickie apple crisp