If you look in most cupboards around the country, you would probably find some Kraft Foods Macaroni & Cheese Dinner. Yeah, it's a favorite of many.

On Tuesday Kraft Foods Group issued a voluntary recall of 242,000 cases, or more than six million boxes of the delicious treat. Why? Some of the boxes may contain small pieces of metal.

Here's everything you need to know about the recall.

"The recalled product is limited to the 7.25-oz. size of the Original flavor of boxed dinner with the 'Best When Used By' dates of September 18, 2015 through October 11, 2015, with the code 'C2' directly below the date on each individual box. The 'C2' refers to a specific production line on which the affected product was made," the company said in a statement.

The recalled boxes were shipped to customers in the U.S. and several other countries. The affected dates of this product were sold in only these four configurations, the company said:

• 7.25 oz. box, Original flavor • 3-pack box of those 7.25 oz. boxes, Original flavor • 4-pack shrink-wrap of those 7.25 oz. boxes, Original flavor • 5-pack shrink-wrap of those 7.25 oz. boxes, Original flavor

Kraft did not say if any injuries were reported. The boxes can be returned to stores for a refund or exchange.