What is the classical music piece that has fighting kitchen utensils?

You're likely thinking of "The Flight of the Bumblebee" by Nikolai Rimsky-Korsakov.

While the piece doesn't literally depict fighting kitchen utensils, its fast, buzzing melody and frenetic pace have led to many humorous interpretations. The most famous example is probably the animated short film "The Flight of the Bumblebee" by Walt Disney, where a bumblebee is portrayed as a mischievous creature causing chaos in a kitchen, with various utensils seemingly joining the fray.

However, the original piece is purely instrumental and was inspired by the buzzing sound of a bumblebee, not by kitchen utensils. The composer intended the piece to showcase the virtuosity of the instrument playing it (usually a violin).