No, you should not put “stay-at-home mom” on your resume. Unless you’re applying for a job where your parenting and homemaking skills are directly transferable, like those in housekeeping or childcare, your experience as a stay-at-home mom should be left off your resume.
Instead, use your cover letter to explain the gap on your resume and elaborate on the skills you picked up as a stay-at-home parent.
You can also use a skills-based resume format to make your employment gap less noticeable. A skills-based resume emphasizes your valuable professional skills while taking focus away from your chronological work history.