Take them to SportChek or Sportmart. They should have a device that's similar to a hair dryer. I did that with my Nike Quest 9s. It's not 'baking', but it heats up the boot to mould better. It helped a lot. I don't think putting them in your oven will make your next cake or cookies turn out well.
If they say that it's for customers only, tell them that you're fully prepaired to buy some sock tape.
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