I noticed when I microwaved one of the Velveeta Mac and cheese bowls what looked like plastic when I was mixing the cheese. I decided to throw it away and took another one and boiled the shells in a pot for a few minutes. When I emptied the shells and water into the strainer I noticed as the pot cooled the same plastic substance. I cannot give this to my son. Im not sure if this is a problem with a few bowls or if this is something all the bowls should be recalled for.