Easy Crochet Zigzag Waffle Blanket: Free Step-by-Step
Dense, thick stitches create a squishy texture that feels substantial under your hands, making this project an excellent choice for a chilly evening on the couch. This blanket features a distinct repeating ridge that resembles a zigging wave, adding visual depth to your living room seating or a nursery cradle. You will work with a variation of the post stitch to achieve the raised squares, which creates a warm fabric that traps heat effectively. Beginners find the rhythmic nature of this build soothing once they grasp the front post technique. You will enjoy how the yarn colors shift across the zigzags as you progress through each row. This project provides a reliable way to practice tension control while crafting a durable heirloom for your home.

Why You’ll Love This Pattern
This beginner-friendly crochet coaster pattern provides an excellent introduction to working in the round. The finished pieces are small enough to complete in a single sitting, making them ideal for using up leftover cotton yarn from larger projects. Because they are constructed using simple double crochet stitches, they lie perfectly flat on any table surface without curling. These coasters protect your furniture from condensation and heat while adding a handmade touch to your home decor.
I managed to finish a set of four in one afternoon, and they look beautiful on my coffee table. The instructions were very easy to follow even though I am still learning how to count my rounds correctly.
— Sarah, hobbyist crocheter
Pattern Overview & Skill Level
- Skill Level: Beginner
- Approximate Time: 30 minutes per coaster
- Construction: Working in continuous rounds starting from a center ring
- Finished Dimensions: 4 inches (10 cm) in diameter
Materials & Supplies Needed
- Yarn: Worsted weight (#4) 100% cotton yarn, approximately 15 yards per coaster. Cotton is chosen for its absorbency and heat resistance.
- Hook Size: 5.0 mm (US H-8)
- Notions: Tapestry needle for weaving in ends, a pair of sharp scissors, and an optional stitch marker.
- Yarn Substitutions: You can use acrylic yarn, but note that it is less absorbent and may melt if exposed to very hot mugs. If you use a DK weight yarn instead, your coaster will be smaller unless you increase your hook size or add an extra round.
Stitch Guide & Abbreviations (US Terms)
- ch: chain
- st/sts: stitch/stitches
- sl st: slip stitch
- dc: double crochet
- dc2tog: double crochet 2 together (a decrease technique used to create a flat finish)
- MR: magic ring (a method for starting rounds with an adjustable loop)
Step-by-Step Pattern Instructions
Coaster Body
- Rnd 1: Start with a MR. Ch 3 (counts as first dc), work 11 dc into the ring. Join with a sl st to the top of the initial ch 3. (12 sts)
- Rnd 2: Ch 3, dc in the same st as join. Work 2 dc in each remaining st around. Join with a sl st to the top of the initial ch 3. (24 sts)
- Rnd 3: Ch 3, 2 dc in the next st. 1 dc in the next st, 2 dc in the following st. Repeat from * to * around. Join with a sl st to the top of the initial ch 3. (36 sts)
- Rnd 4: Ch 3, dc in the next st, 2 dc in the following st. 1 dc in each of the next 2 sts, 2 dc in the following st. Repeat from * to * around. Join with a sl st to the top of the initial ch 3. (48 sts)
Finishing
After completing Rnd 4, fasten off your yarn, leaving a 6-inch tail. Pull the tail through the final loop to secure the knot. Use your tapestry needle to weave the tail back and forth through the stitches on the back of the coaster to ensure it stays hidden. Trim any excess yarn close to the fabric, being careful not to cut the actual stitches.
Care & Washing Instructions
- Machine wash on a gentle cycle in cold water with mild detergent to preserve the color.
- Lay the coaster flat on a towel to air dry, reshaping it with your hands while it is still damp.
- Avoid using fabric softener, as it can reduce the natural absorbency of the cotton fibers.
Pro Tips & Common Mistakes to Avoid
Maintain consistent tension throughout each round to ensure the coaster remains flat. If the edges start to ruffle, your tension may be too loose or you may be accidentally adding extra stitches. Always count your stitches at the end of every round to match the counts provided. If you want a larger coaster, simply add another round by increasing the number of single double crochets between the increase stitches, though this will require more yarn.
Frequently Asked Questions
Can I use wool yarn for these coasters?
Wool is not recommended because it is not as heat-resistant as cotton and may felt when exposed to moisture from cold drinks.
How do I adjust the size of the coaster?
You can stop at Rnd 3 for a smaller coaster or add an additional round of increases to create a larger mat, but ensure you maintain the mathematical ratio of increases to keep it flat.
Is this pattern suitable for someone who has never crocheted before?
Yes, this pattern uses only basic chain and double crochet stitches, making it a manageable project for a total beginner.
Am I allowed to sell coasters made from this pattern?
You are welcome to sell finished items made from this pattern provided you credit the designer, but you may not sell or redistribute the written pattern itself.

A finished throw like this brings a handcrafted warmth to your favorite reading chair that mass-produced items simply cannot replicate. You might try alternating between a solid neutral color and a deep navy for a classic look, or experiment with a variegated wool blend to watch the patterns change as you work. Sharing a photo of your progress helps other makers find their next project. Please tag your finished work online so we can admire your color choices. You are welcome to browse the rest of the blog for more free patterns to fill your weekend afternoons.





