This method is by "Prairie Sky Quilting" and the quilt is "Easy Diamonds". They sell other patterns using these templates. This technique uses the "Batting Buddy" square templates that is sold on their site. I have purchased the template set and am working on a quilt for my sister-in-law. The secret is using the templates to get the exact cutting for the square used to cut the larger square of material of your choice and the inside batting square. I have had no problems so far. I am on my 3rd and 4th rows. So far I am pleased with the results.