Hmmm.. looks like they sewed the block together then sewed the top on like an applique.
Look Suzanne Mc Neil up on You Tube and see how she does the 10 minute block. I have her book on it and its different than what I learned.

Yes, I would say so. I made a quilt with the 10 min. block and my blocks looked like your one which is smooth--Green I believe. However, I have seen others so there are several variations on the original. Any version I am sure is fine. Mine had the between blocks as snowballs, and also snowballs in the border. Have had lots of compliments on it, and it should be snuggly warm this Winter! Good luck with your project! Mariah

that's the 10 minute block with Pizzaz!

It is a 10 Minute block. I just made a whole top using them & did the cathedral roll on all of the centers. The idea of pinning the center & sewing down the sides is a great idea. I'll have to try that next time. These blocks are so quick to make. I love seeing them unfold to see how pretty they are.

Just a 'warning' - I think Suzanne McNeil suggests using 10" squares. When you use them this big, the block is very easy to construct. I used this technique with 5" squares and found them to take twice as long because the smaller pieces are harder to manipulate. Maybe 8 or 9" squares? Even 7" would help but then they aren't precuts which sure are easy to use.

The pattern is called "Snow Puzzle" by Shelley Swanland. The first time I left out the "e" in Shelley.

This is Shelley Swanland's design and I think she does it different than the 10 min. block. I will check my pattern.

It sure looks like the 10 minute block. I have done several of them.

That's very striking. Definitely "pin-able"!

Definitely a 10 minute block. She took the cathedral windows edges to a different level ... really pretty!