Machine to mix and cook at the same time?

Hi everyone.

Can anyone suggest how to safely customise a heavy duty food mixer (I have a Kitchenaid) to allow a heat source to be placed underneath?

I basically need to mix and cook at the same time. There are various low-powered electric stirrers (I’ve tried using a Stirio) for domestic use, but then there seems to be nothing commercially available in-between that and huge industrial machines.

Any suggestions very gratefully received.

Thanks
Michael