Little hidden Peas in French

pois caché

That might not mean anything to you but it is what Mom would make in her large Corningware casserole pan. She would put the hamburg beef down first, followed by a layer of peas and then topped with mashed potatoes. It is "Shepard's Pie" when made with corn but Mom always called it s'pois caché.
She also taught us the wrong way to say "colander" To this day I am not sure if it is Co-lander or Coll-ender. I only wish I could hear her speak French again, or sing it like she use to.