Thompson, I'm still experimenting with my air fryer. Regrettably most of the things it does best is cook breaded things.

But, it does marvy on homemade steak-fries. Peel or just clean a few potatoes, cut into fries. Put in a bowl or bag and coat with olive oil, black pepper, salt, a bit of red pepper if you like, and a couple dashes of garlic powder and/or onion powder. Cook at I think 375, 10-12 minutes.Toss or flip halfway through if you can. But best to just keep checking every few minutes til you're happy.

Tried sweet potatoes, they were too sugary and quick to burn. Tried sliced bell peppers and onions, on foil with a bit of olive oil, delightful (maybe more like 6-8 minutes for those). Have not tried sliced squash but I imagine coating with some kind of italian or herb dressing would work.