Step 1: Sew squares into 2 rows of 3 squares each. (Fabric 1 & Fabric 2 should be sewn in the following order: 121 & 212. This will give you two coasters with contrasting fronts and backs.)
Step 3: Place one strip right sides together, remembering to match the seams. Finger press down the fold. Open and cut along fold line. Repeat with second strip. This will give you the front and back of two mug rugs.
Step 5: Place batting on what would be the front of the mug rug. Doing this will keep the seam to the back when turned right side out. Pin through all layers, sew 1/4" seam, leaving a 2 1/2" opening for turning. Clip the corners, being careful not to cut your seams and turn right side out. You can use a pencil to push out the corners once turned.