Crossed blanket stitch is a variation that makes crossed patterns, in turn creating  a series of diamond patterns, while making the blanket stitch. It is a decorative stitch which can be used to replace the traditional blanket stitch.

I will work between two horizontally parallel lines, from left to right. This stitch, once the technique learnt, can be done in any direction.

You need to know the blanket stitch and closed blanket stitch to be able to proceed with this stitch easily. I will be working between two horizontally parallel lines from left to right.

crossed_blanket_stitch_1       crossed_blanket_stitch_2
Fig 1: Start by followign the sequence of A, B, C as in the closed blanket stitch. Now,  take the needle in through D and out through E, as shown. This time, D lies before B, the reason for the crossed effect.   Fig 2: Continue by taking the needle in through F and out through E.
crossed_blanket_stitch_3   crossed_blanket_stitch_4
Fig 3: Now, take the needle in through B and out through F. Continue this process of making crosses with diagonal stitches. It will turn out that you are in fact making diamonds with these crosses.   Fig 4: A finished portion of the crossed blanket stitch would look like this.