Green’s Dictionary of Slang

(US) to succeed without problems.

1901		W. Irwin Love Sonnets of a Hoodlum VI n.p.: See how that Murphy cake-walks in his pride.
1909		‘O. Henry’ Roads of Destiny 350: That’s why you see me cake-walking with the ex-rebs to the illegitimate tune about ’simmon-seeds and cotton’.
1930		R.E. Howard ‘Winner Take All’ Fight Stories July 🌐 Them two hams that just faded away only cake-walked through the bout.
1963		B. Hecht Gaily, Gaily 92: She liked to wallow in private dope parties where sex and hallucination cakewalked in the night.
1989		S. Armitage ‘Canard’ in Zoom 54: It cakewalked / the field like a knife through hot butter.