As promised, a tutorial for this eezie-peezie project. I cut two 12" squares of cotton fabric and two more of all cotton batting.
Quilted the batting to each fabric square.
Sewed darts in the center of each side. I started at 1/2" and ended at zero about an inch from the center of the block.
I did the same on the gray block.
Right sides together, I stitched the blocks all around...leaving an opening to turn. Hand stitched the opening and finished with some machine topstitching. Now wasn't that easy?
Note: no metallics or synthetics in this project, please, because it goes right into the microwave.