Rationally, I know there’s really nothing wrong with it, but it just seems weird. I’m sure they’re fine to eat, but it seems that you would only do this once, to say your car gets hot enough to literally bake in.
Tasty? Very possibly.
Practical? Maybe if you don’t own an oven. And it’s the summer. And you have a potluck to go to that evening. And you have lots of spare cookie dough lying around…