Oh alright, that’s not how you say it. Can’t a guy have a little fun? Most anglophones pronounce the word kla-FOO-tee, though if you really want to get your frog on, you can say kla-foo-TEE. However I warn you that your friends will think you’re auditioning for an announcer gig on National Pubic Radio.
UPDATE: Reader Michelle from Angouleme, France, helpfully supplies this link for all those seeking to pronouce clafoutis the right way. Thank you, Michelle!