What I liked about this piece:
The ideas are very clear, and all the elements serves that idea! Picking a minor key adds to the "mischeivousness" and there are no notes that are out of the established keys. While Ragtimes usually have note and phrases that extends through a beat, or sometimes across bars (so that the first beat doesn't land on beat 1), I can't argue with the stylistic choices you've made here since it serves the feeling so well. I would say this piece is more in the Swing territory, and with its high energy piano strides and runs, I can definitely see myself screaming at my friend to plate the food as it plays in the background!
What I'd love to see in future pieces:
The transition from Am to Bbm is a little abrupt, I'd like to be eased in with a bit of harmonic preparation (maybe a ii°-V7-i in Bbm) and melodic preparation (make the melody go up or down into one of the chord tones of Bbm). Alternatively leaning in to the abruptness also works, but then we really have to make a point of it and introduce brand new material and maybe a change in rhythmic feel too!
Overall a great piece for the fun and mischievous fast paced GOTY contender World of Cakes!