This is a great stitch for baby blankets as it gives texture but isn't complicated.
Ch an even number of sts.
Row 1 (RS): Sc2tog over 2nd and 3rd ch from hk, *ch 1, sc3tog over prev ch and next 2 ch; rep from * across to last 2 ch, ch 1, sc2tog over prev ch and last ch, turn.
Row 2: Ch 1, sc2tog over 1st sc and next ch-1 sp, *ch 1, sc3tog over prev ch-1 sp and next sc and ch-1 sp; rep from * across to last ch-1 sp, ch 1, sc2tog over prev ch-1 sp and last sc, turn.
Rep row 2 to desired length.