If you love the look of classic quilt block patterns but prefer to crochet your blankets, today’s free crochet pattern is for you! The Double Irish Chain Granny Square Blanket (as the name suggests) uses granny squares to mimic the traditional double Irish chain quilt pattern. Get the instructions to make your own version today. This blanket fits a double bed and includes overhang on all four sides.
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Long time readers may remember this blanket, which I finished back in 2012 for my younger sister. At the time, she was living in New Orleans and wanted something in Saints colors. I didn’t think she’d end up there permanently, so I wanted to pick a classic pattern that could move with her somewhere else. (She’s in Houston now, by the way.) I always loved the look of the classic double Irish chain quilting pattern, and we all know I love granny squares, so after a little bit of measuring and sketching, the idea for this blanket was born.
This is a beginner-friendly pattern, but due to the large size you will need plenty of patience. My one tip is don’t wait until the end to weave in all the ends. It’s much more manageable if you weave in the ends after you complete each square or as you join each section together.
I used Cascade 220 Superwash in 877 Golden as the CA for my version, along with a discontinued superwash wool yarn in cream and black. You can use any three colors of medium weight yarn for yours!
This post is part of the second annual Granny Square Month on Underground Crafter. You can find links to the rest of the posts here.
If you make your own Double Irish Chain Granny Square Blanket , I’d love to see it! Share your progress and questions by tagging me on Facebook as @Underground Crafter, Instragram as @ucrafter, or Twitter as @ucrafter. You can also share a picture in the Underground Crafters Facebook group. Sign up for my weekly newsletter and get a coupon code for your choice of one of my premium patterns and other subscriber goodies. Plus, you’ll never miss one of my free patterns again!
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Double Irish Chain Granny Square Blanket
Crochet Pattern by Underground Crafter
Use the traditional granny square to mimic the look of the classic quilt pattern.
- To cover a double bed.
- Medium weight yarn in 3 colors – approximately 1,460 yds (1,335 m) in gold (CA), 1,780 yd (1,628 m) in cream (CB), and 3,470 yd (3,173 m) in black (CC).
- US Size J-10/6 mm crochet hook, or size needed to obtain gauge.
- Yarn needle.
- Granny Square = 4” (10 cm) square in pattern. Exact gauge is not critical for this project.
Abbreviations Used in This Pattern
- CA – Color A
- CB – Color B
- CC – Color C
- ch – chain
- dc – double crochet
- rep – repeat
- Rnd(s) – Round(s)
- sc – single crochet
- sk – skip
- sl st – slip stitch
- sp – space
- st(s) – stitch(es)
- *+ Repeat instructions after asterisk or plus sign as indicated.
-  Repeat instructions between brackets as indicated.
- To make larger Granny Squares, rep Rnd 3 until desired size is reached. Note that using Granny Squares of a different size will require you to customize your Border.
- I joined my Granny Squares while crocheting using the “join-as-you-go” method in Rnd 3. You can find a join-as-you go tutorial here. If you prefer to keep the project more portable, you can crochet all the Granny Squares and join at the end using the slip stitch seam. You can find a slip stitch seam tutorial here.
To Make the Blanket
- Crochet the Granny Squares in the order shown in the Assembly Diagram below, starting on top row and working your way to the bottom. Crochet the first Granny Square through Rnd 3 (see below for pattern). All remaining Granny Squares should be crocheted through Rnd 2 and then joined to other squares using the join-as-you-go method (see notes for tutorial). Continue on to Border Instructions.
Slip Stitch Seam Method
- Make 72 Granny Squares in CA, 124 Granny Squares in CB, and 179 Granny Squares in CC. See below for Granny Square pattern. Join using slip stitch seam (see notes for tutorial) following Assembly Diagram below. Continue on to Border Instructions.
- Ch 4, sk 3 ch, join with sl st to next ch to form ring.
- Rnd 1: Ch 3 (counts as dc, here and throughout), 2 dc in ring, [ch 2, 3 dc in ring] 3 times, ch 1, sc (counts as ch 1) to top of ch 3 to join. (12 sts + 4 ch-2 sp)
- Rnd 2: Ch 3, 2 dc in same ch-2 sp, [ch 1, (3 dc, ch 2, 3 dc) in next ch-2 sp] 3 times, ch 1, 3 dc in first ch-2 sp, ch 1, sc (counts as ch 1) to top of ch 3 to join. (24 sts + 4 ch-2 sp)
- Rnd 3: Ch 3, 2 dc in same ch-2 sp, [*(ch 1, 3 dc) in ea ch-1 sp across to corner ch-2 sp, ch 1,** (3 dc, ch 2, 3 dc) in ch-2 sp] 3 times, rep from * to ** once, 3 dc in first ch-2 sp, ch 1, sc (counts as ch 1) to top of ch 3 to join. (36 sts + 8 ch-1 sp + 4 ch-2 sp)
- Border Rnd 1: Join CA with sl st in any corner ch-2 sp, ch 3 (counts as dc, here and throughout), 2 dc in same ch-2 sp, *[ch 1, 3 dc in next ch-1 sp] twice,** ch 1, dc in last ch-2 sp on current Granny Square, 2 dc in first ch-2 sp on next Granny Square; rep from * around, ending at ** before corner ch-2 sp, (3 dc, ch 2, 3 dc) in corner ch-2 sp,+ rep from * to + around, ending final rep at ** before first ch-2 sp, 3 dc in first ch-1 sp, ch 1, sc (counts as ch 1) to top of ch 3 to join.
- Border Rnd 2: Ch 3, 2 dc in same ch-2 sp, [ch 1, 3 dc in next ch-1 sp] across to corner ch-2 sp,** (3 dc, ch 2, 3 dc) in corner ch-2 sp; rep from * around, ending final rep at ** before first ch-2 sp, 3 dc in first ch-1 sp, ch 1, sc (counts as ch 1) to top of ch 3 to join.
- Border Rnds 3-4: Rep Border Rnd 2 twice. Fasten off CA.
- Border Rnd 5: Join CC with sl st to any corner ch-2 sp, rep Border Rnd 2. Do not fasten off CC.
- Begin working in Rows.
- Border Row 1a: Turn to work along long side of blanket only, ch 4 (counts as dc + ch-1 sp), 3 dc in next ch-1 sp, [ch 1, 3 dc in next ch-1 sp] across to corner ch-2 sp, ch 1, dc in corner ch-1 sp.
- Border Row 2a: Turn, ch 4 (counts as dc + ch-1 sp), [3 dc in next ch-1 sp, ch 1] across to last st, dc in third ch of turning ch.
- Border Rows 3a-7a: Rep Border Row 2a, 5 more times. Fasten off CC.
- Border Row 1b: Join CC with sl st to corner ch-2 sp on opposite long side of blanket, ch 4 (counts as dc + ch-1 sp), 3 dc in next ch-1 sp, [ch 1, 3 dc in next ch-1 sp] across to corner ch-2 sp, ch 1, dc in corner ch-1 sp.
- Border Rows 2b-7b: Rep Border Rows 2a-7a. Do not fasten off CC.
- Final Border Rnd: Make a sc border by working 1 sc into each ch-1 sp and st around, and working 3 sc into each corner. Fasten off CC.
- With yarn needle, weave in ends on wrong side of blanket.
5 thoughts on “Crochet Pattern: Double Irish Chain Granny Square Blanket”
What a beautiful afghan. I wish I had the patience to sew all the squares together. I much prefer an afghan I crochet all in one piece.
So beautiful! Brings back so many memories for me. I learned to crochet a bit in Elementary School. Of course the Granny square was what I learned to make. I am a child of the 60’s and 70’s. My Mom made afghans with the Granny Squares. She passed away right after I was married but we still have one of the afghans she made. In the Groovy 70’s colors of course!
Simply gorgeous! I was playing around trying to create my own pattern for a triple Irish chain afghan and found yours. Love it.