What is a pattern for a baked potato bag?

A pattern for a baked potato bag provides instructions on how to sew an insulated fabric bag that holds potatoes while they cook in the microwave. The bags are also appropriate for heating rolls and tortillas in the microwave because they retain steam to keep food from drying out.

A potato bag pattern sandwiches a rectangle-shaped layer of cotton batting between two layers of cotton fabric. The rectangle then folds up to make a square with an opening for the potatoes. When assembling the bag from a pattern, it's important to ensure the bag rotates freely on the microwave turntable to avoid scorching.