Corrugated Short-Row Ribbed Crochet Hat Pattern Free: Sideways Super Bulky Beanie

Mary Ward By Mary Ward • • 5 min read • Leave a Comment

Standard rectangle-seamed crochet beanies are fast, but gathering 40+ super bulky stitches at the top of the head can leave a thick, puckered knot at the crown. Designed by Julia Madill, the Corrugated Short-Row Ribbed Crochet Hat eliminates crown bulk by working sideways in back-loop single crochet (scbl) across four 12-row short-row wedges on a Size U.S. K/10.5 (6.5 mm) hook. Each wedge steps down gradually from 41 stitches to 33 stitches at the crown before uniting all 41 stitches again—creating a smooth, knit-look watch cap from a single ball of yarn.

Deep Emerald forest green super bulky Corrugated Crochet Hat worked sideways in back-loop single crochet ribs with shaped short-row crown wedges
Worked sideways in a single ball of Patons Norse (Emerald) with a 6.5 mm hook, four 12-row short-row wedges taper the crown naturally without bulky bunching.

Quick Pattern Specifications

  • Skill Level: Easy (Sideways Back-Loop Single Crochet + Short-Row Crown Shaping)
  • Yarn Weight: Super Bulky (#6) — Patons® Norse™ (58% Acrylic, 28% Wool, 14% Polyester; 3.5 oz / 100 g; 211 yds / 193 m per ball)
  • Featured Colorway: Emerald (91011) — 1 ball makes the complete hat
  • Hook Size: Size U.S. K/10.5 (6.5 mm) crochet hook (or size needed to obtain gauge)
  • Gauge: 11 sts and 11 rows = 4″ [10 cm] in scbl pattern
  • Finished Size: One Size to fit average Adult head (21″–23″ / 53.5–58.5 cm circumference; 4 wedges × 12 rows + 1 foundation row = 49 rows around)

How the 12-Row Short-Row Crown Wedge Works

Every 12-row wedge shapes one quarter of the hat circumference. On even rows (Rows 2, 4, 6, 8) you crochet up toward the crown and leave the last stitch unworked before turning. On odd return rows (Rows 3, 5, 7, 9) you start at the crown edge with a slip stitch in the back loop only (sl st in blo) of the first stitch and work `scbl` down to the brim—stepping the crown down by 1 stitch per row from 41 sts down to 33 sts. Then on Row 10, you crochet all the way up to the top of the crown across all 8 stair-steps to restore your full 41 stitches!

Overhead flat-lay of Patons Norse Emerald forest green super bulky yarn ball, 6.5 mm US K/10.5 crochet hook, yarn needle, and scissors
All you need is 1 ball (100 g / 211 yds) of Patons Norse in Emerald and a Size U.S. K/10.5 (6.5 mm) crochet hook.

Materials & Custom Hat Sizing Table

  • Yarn: 1 ball of Patons® Norse™ (#6 Super Bulky) in Emerald (91011) (or 190 yds of any #5 bulky or #6 light super-bulky roving yarn).
  • Crochet Hook: Size U.S. K/10.5 (6.5 mm) crochet hook.
  • Notions: Stitch marker (to mark the crown edge), blunt yarn needle, and scissors.
Hat Size Head Circumference Starting Chain (Total Height) Full-Length Row Stitches Total 12-Row Wedges
Child / Youth 18″–20″ (45.5–51 cm) Ch 36 (12.75″ tall) 35 scbl (step down to 27) 3.5 wedges (43 rows)
Adult Regular (Pattern) 21″–22.5″ (53.5–57 cm) Ch 42 (15″ tall w/ fold-up cuff) 41 scbl (step down to 33) 4 wedges (49 rows)
Adult XL 23.5″–25″ (59.5–63.5 cm) Ch 44 (15.75″ tall) 43 scbl (step down to 35) 5 wedges (61 rows)

Abbreviations (US Crochet Terms)

  • Ch = Chain(s)
  • Pat = Pattern
  • Rep = Repeat
  • RS = Right side
  • Sc = Single crochet
  • Scbl = Single crochet in back loop only
  • Sl st = Slip stitch
  • St(s) = Stitch(es)
  • Tog = Together
Hands crocheting back-loop single crochet short rows on the deep Emerald green Corrugated Hat with a 6.5 mm hook
On Rows 2 through 9 of each wedge, you step back by 1 stitch at the crown edge (from 40 sts down to 33 sts), then work Row 10 across all 41 stitches to lock the wedge together.

Step-by-Step Crochet Instructions

Part 1: Crocheting the 4 Short-Row Crown Wedges

  1. Foundation Chain: Ch 42.
  2. Row 1 (RS – Brim to Crown): Work 1 sc in 2nd ch from hook. Work 1 sc in each ch across to the end of the chain. Turn. (41 sc)
  3. Row 2 (Crown Step-Back 1): Ch 1. Work 1 scbl in first sc and in each sc across to the last sc; leave last sc unworked. Turn. (40 sts)
  4. Row 3 (Crown Step-Back 2): Work 1 sl st in back loop only of first sc. Work 1 scbl in next sc and in each sc to the end of the row (brim edge). Turn. (39 sts)
  5. Row 4 (Crown Step-Back 3): Ch 1. Work 1 scbl in first sc and in each sc to the last st; leave last st unworked. Turn. (38 sts)
  6. Row 5 (Crown Step-Back 4): Work 1 sl st in back loop only of first sc. Work 1 scbl in next sc and in each sc to the end of the row. Turn. (37 sts)
  7. Rows 6 to 9 (Crown Step-Backs 5–8): Repeat Rows 4 and 5 twice more (stepping down to 36, 35, 34, and finally 33 sts on Row 9).
  8. Row 10 (Unite All 41 Stitches): Ch 1. Work 1 scbl in each st to the end of the row, working into the 33 stitches of Row 9 and then continuing up across the 8 skipped stitches and slip stitches of the previous short rows. Turn. (41 scbl)
  9. Rows 11 to 13 (Full-Length Rib Rows): Ch 1. Work 1 scbl in each st across all 41 stitches to the end of the row. Turn.
  10. Repeat for Remaining 3 Wedges: Repeat Rows 2 to 13 three times more (4 complete wedges = 49 rows total). Break yarn leaving a long tail for seaming.

Part 2: Closing the Crown & Back Seam

  1. Cinch Top Crown: Thread the long yarn tail onto your yarn needle, weave through the row-ends along the shaped top edge of the hat, and pull tightly to cinch the crown closed.
  2. Seam Side Edges: Whipstitch or mattress-stitch the foundation chain and Row 49 together through the back loops so the seam blends invisibly into the vertical ribbing. Weave in ends and fold up a 3″ [7.5 cm] cuff around the brim.
Finished deep Emerald green Corrugated Ribbed Crochet Beanie Hat with folded cuff styled on a wooden bench
Because the top of the hat is tapered with short rows, the crown closes completely flat like a tailored knit watch cap.

Save & Print This Crochet Pattern

Prefer working offline or keeping a printed copy in your project bag? Download our formatted Corrugated Crochet Hat printable PDF guide below, complete with the full materials table, stitch diagrams, color-key charts, and step-by-step assembly instructions prepared for My Aunty Patterns.

Filed Under: Crochet Accessories Crochet Patterns Easy Crochet
Mary Ward
Pattern Designer & Founder

Mary Ward

Mary Ward is the crochet designer and fiber artist behind My Aunty Patterns. She creates modern, easy-to-follow crochet patterns for blankets, hats, cardigans, and home decor with clear step-by-step instructions for every skill level.

SIMILAR CROCHET PATTERNS

View All Patterns →

READER COMMENTS & PATTERN QUESTIONS

Have a question about stitch counts, yarn substitutions, or sizing? Leave a comment below — Mary Ward reads and replies to every maker question!

Leave a Comment or Ask a Pattern Question

Your email address will not be published. Required fields are marked *