Racketeer Rabbit

Racketeer Rabbit is a 1946 animated short film in the Looney Tunes series produced by Warner Bros. Cartoons, Inc. It stars Bugs Bunny, who duels with a pair of gangsters ... Rocky and Mugsy forerunners. Directed by Friz Freleng, it features a classic gag involving a gas oven.

Reference: Racketeer Rabbit at The Big Cartoon Database