Inside – Learn how to crochet the Hollow Howler; an overlay mosaic crochet pattern for Halloween.
Eek! It’s scary to think this is the LAST section of the Spooky Season Blanket CAL! Thank you so much for following along the last 6 weeks. After this frowny-face pumpkin, all is left is the Moss Stitch Envelope Border. Without further ado.. let’s get stitching!

Spooky Season Mosaic Blanket CAL (crochet along)
In case you missed it… we’re crocheting this blanket together! The Spooky Season Mosaic Blanket is an overlay mosaic crochet pattern. What is overlay mosaic? It is a crochet technique that works on the Right Side of the fabric, and uses alternating Front Loop / Back Loop stitches to create an image. All you need to know is how to Single Crochet and Double Crochet before starting this crochet pattern.
✨ Need help with overlay mosaic crochet? ✨
Check out this video tutorial here.
Spooky Season CAL Details
- Start Date – Thursday, August 28th
- End Date – Thursday, October 16th (plenty of time to finish before 10/31)
- Duration – 8 Weeks (7 crochet sections + border)
- Where – High Desert Yarn Community Group on Facebook (click here to join the fun!)
- Cost – Free Pattern on the Blog (released weekly on Thursdays) or $12.99 PDF pattern (shop on Etsy or Ravelry)

Read all about the Spooky Season CAL on the event page.
Pro Tip – Pin or Bookmark the event page so you never lose it!

Before We Begin Stitching the Hollow Howler Section
- Take a moment to read over all the details of the WHOLE pattern. Head to the event page for all the details.
- Decide on the size of your blanket.
- Crochet a gauge swatch. (Please don’t skip this step!)
NOTE ABOUT THIS FREE CROCHET PATTERN :
Thank you for choosing this free pattern as part of your crochet journey! It’s an honor for you to be here, browsing the High Desert Yarn Blog. This pattern is 100% free for you to crochet from, but please, do not screenshot, or copy+paste this pattern. However, work directly from this webpage. The ad revenue from this website allows me to offer free crochet patterns. If you do not like the scrolling, or ads, then you may purchase the ad-free PDF in my Etsy Shop or Ravelry Store. Thank you for your cooperation. Happy creating! -Joanna (Owner + Creative)
Notes
- Experience Level – Advanced Beginner
- You will need to know how to Single Crochet, Double Crochet, and work in the back (or front) loop before starting this pattern. Basic overlay mosaic technique knowledge is needed to begin this pattern.
- CH 1 does not count as a stitch.
- Foundation SC may be used as a substitute for the foundation chain and Row 1.
- Written Instructions – Repeat the instructions inside the [ … ] as many times according to your size.
- Blanket Sizes and corresponding stitch counts will be written as follows : Lapghan (Throw, XL Throw).
- For materials list + sizing, please refer to the Event Page here.
Rules of Overlay Mosaic Crochet
- Color Changes – Each row is crocheted with a single color (Color A, B, C or D).
- Cut yarn after each row – Fasten off yarn after each row, and do not crochet over (or weave in) the ends. An envelope border will be used to contain the yarn ends,
- Border Stitches – Each row begins and ends with a Center Single Crochet. This stitch is made under BOTH top loops. Click here for a photo tutorial.
- https://highdesertyarn.com/stitch-tutorial-center-single-crochet/
- BLO SC – Every Single Crochet (besides the border stitches) is made in the back loop only.
- FLO DC – Every Double Crochet will go in the front loop of the 2nd row from the one you’re working in. So, skip the row you normally work in, and crochet into the Front Loop of the next row below.
- Turning the work – Do not turn your work. Always crochet from the Right to Left (right handed crocheters) or Left to Right (left handed crocheters).
Still need help with the Overlay Crochet Techniques?
Watch this video tutorial for guidance.
Stitch Abbreviations
US crochet terms used throughout.
- FSC – foundation chain in single crochet
- CH(s) – chain(s)
- SC – single crochet
- BLOsc – back loop only single crochet
- FLOdc – front loop only double crochet
- st(s) – stitch(es)
- Color A – Orange
- Color B – Black
- Color C – White
- Color D – Purple
Special Stitches
BLOsc – Back Loop Only Single Crochet
Insert hook in the back loop (the loop furthest away from you) of the top two loops to create a stitch.
FLOdc – Front Loop Only Double Crochet
Insert hook in the front loop (the loop closest to you) of the top two loops to create a stitch.
If you need any help figuring out which loop is WHICH LOOP, then this video tutorial will help.
Click Here – https://youtu.be/4118vc-UujI
Written Pattern for Moonlit Magic Chart (right handed)
- Repeat the instructions inside the [ … ] as many times according to your size.
- The rows are divided into groups of 5 to help keep you on track for finishing this week.
- Scroll down for left handed written instructions.
Row 1: With Color B, sc in 1st st, [ BLOsc20 ], sc in last st
Row 2: With Color A, sc in 1st st, [ BLOsc20 ], sc in last st
Row 3: With Color B, sc in 1st st, [ FLOdc, *BLOsc2, FLOdc2, rep from * 3 times, BLOsc2, FLOdc ], sc in last st
Row 4: With Color A, sc in 1st st, [ BLOsc, *FLOdc2, BLOsc2, rep from * 3 times, FLOdc2, BLOsc ], sc in last st
Row 5: With Color B, sc in 1st st, [ FLOdc, *BLOsc2, FLOdc2, rep from * 3 times, BLOsc2, FLOdc ], sc in last st
Row 6: With Color A, sc in 1st st, [ BLOsc20 ], sc in last st
Row 7: With Color B, sc in 1st st, [ BLOsc20 ], sc in last st
Row 8: With Color A, sc in 1st st, [ FLOdc, BLOsc2, FLOdc14, BLOsc2, FLOdc ], sc in last st
Row 9: With Color B, sc in 1st st, [ BLOsc, FLOdc2, BLOsc14, FLOdc2, BLOsc ], sc in last st
Row 10: With Color A, sc in 1st st, [ FLOdc, BLOsc3, FLOdc, BLOsc2, FLOdc, BLOsc3, FLOdc, BLOsc3, FLOdc, BLOsc3, FLOdc ], sc in last st
Row 11: With Color B, sc in 1st st, [ BLOsc2, FLOdc2, BLOsc, FLOdc2, BLOsc, FLOdc3, BLOsc, FLOdc3, BLOsc, FLOdc2, BLOsc2 ], sc in last st
Row 12: With Color A, sc in 1st st, [ FLOdc2, BLOsc16, FLOdc2 ], sc in last st
Row 13: With Color B, sc in 1st st, [ BLOsc3, FLOdc3, BLOsc, FLOdc6, BLOsc, FLOdc3, BLOsc3 ], sc in last st
Row 14: With Color A, sc in 1st st, [ FLOdc3, BLOsc3, FLOdc, BLOsc6, FLOdc, BLOsc3, FLOdc3 ], sc in last st
Row 15: With Color B, sc in 1st st, [ BLOsc7, FLOdc2, BLOsc2, FLOdc2, BLOsc7 ], sc in last st
Row 16: With Color A, sc in 1st st, [ FLOdc7, BLOsc2, FLOdc2, BLOsc2, FLOdc7 ], sc in last st
Row 17: With Color B, sc in 1st st, [ BLOsc20 ], sc in last st
Row 18: With Color A, sc in 1st st, [ FLOdc8, BLOsc4, FLOdc8 ], sc in last st
Row 19: With Color B, sc in 1st st, [ BLOsc9, FLOdc2, BLOsc9 ], sc in last st
Row 20: With Color A, sc in 1st st, [ FLOdc3, BLOsc3, FLOdc3, BLOsc2, FLOdc3, BLOsc3, FLOdc3 ], sc in last st
Row 21: With Color B, sc in 1st st, [ BLOsc3, FLOdc3, BLOsc8, FLOdc3, BLOsc3 ], sc in last st
Row 22: With Color A, sc in 1st st, [ FLOdc2, BLOsc5, FLOdc6, BLOsc5, FLOdc2 ], sc in last st
Row 23: With Color B, sc in 1st st, [ BLOsc3, FLOdc3, BLOsc8, FLOdc3, BLOsc3 ], sc in last st
Row 24: With Color A, sc in 1st st, [ FLOdc3, BLOsc3, FLOdc8, BLOsc3, FLOdc3 ], sc in last st
Row 25: With Color B, sc in 1st st, [ BLOsc20 ], sc in last st
Row 26: With Color A, sc in 1st st, [ BLOsc20 ], sc in last st
Row 27: With Color B, sc in 1st st, [ BLOsc, FLOdc2, BLOsc2, rep from * 3 times, FLOdc2, BLOsc ], sc in last st
Row 28: With Color A, sc in 1st st, [ FLOdc, *BLOsc2, FLOdc2, rep rom * 3 times, BLOsc2, FLOdc ], sc in last st
Row 29: With Color B, sc in 1st st, [ BLOsc,* FLOdc2, BLOsc2, rep from * 3 times, FLOdc2, BLOsc ], sc in last st
Row 30: With Color C, sc in 1st st, [ BLOsc20 ], sc in last st
Row 31: With Color D, sc in 1st st, [ BLOsc20 ], sc in last st
Row 32: With Color C, sc in 1st st, [ FLOdc, BLOsc, FLOdc, BLOsc, FLOdc, BLOsc, FLOdc2, BLOsc, FLOdc2, BLOsc, FLOdc2, BLOsc, FLOdc, BLOsc, FLOdc, BLOsc, FLOdc ], sc in last st
Row 33: With Color D, sc in 1st st, [ BLOsc3, FLOdc, BLOsc4, FLOdc, BLOsc2, FLOdc, BLOsc4, FLOdc, BLOsc3 ], sc in last st
Row 34: With Color C, sc in 1st st, [ FLOdc, BLOsc5, FLOdc, BLOsc2, FLOdc2, BLOsc2, FLOdc, BLOsc5, FLOdc ], sc in last st
Row 35: With Color D, sc in 1st st, [ BLOsc3, FLOdc, BLOsc4, FLOdc, BLOsc2, FLOdc, BLOsc4, FLOdc, BLOsc3 ], sc in last st
Row 36: With Color C, sc in 1st st, [ FLOdc, BLOsc, FLOdc, BLOsc, FLOdc, BLOsc, FLOdc2, BLOsc, FLOdc2, BLOsc, FLOdc2, BLOsc, FLOdc, BLOsc, FLOdc, BLOsc, FLOdc ], sc in last st
Left Handed Written Instructions
- Repeat the instructions inside the [ … ] as many times according to your size.
- The rows are divided into groups of 5 to help keep you on track for finishing this week.
Row 1: With Color B, sc in 1st st, [ BLOsc20 ], sc in last st
Row 2: With Color A, sc in 1st st, [ BLOsc20 ], sc in last st
Row 3: With Color B, sc in 1st st, [ FLOdc, *BLOsc2, FLOdc2, rep from * 3 times, BLOsc2, FLOdc ] sc in last st
Row 4: With Color A, sc in 1st st, [ BLOsc, *FLOdc2, BLOsc2, rep from * 3 times, FLOdc2, BLOsc ] sc in last st
Row 5: With Color B, sc in 1st st, [ FLOdc, *BLOsc2, FLOdc2, rep from * 3 times, BLOsc2, FLOdc ] sc in last st
Row 6: With Color A, sc in 1st st, [ BLOsc20 ] sc in last st
Row 7: With Color B, sc in 1st st, [ BLOsc20 ] sc in last st
Row 8: With Color A, sc in 1st st, [ FLOdc, BLOsc2, FLOdc14, BLOsc2, FLOdc ] sc in last st
Row 9: With Color B, sc in 1st st, [ BLOsc, FLOdc2, BLOsc14, FLOdc2, BLOsc ] sc in last st
Row 10: With Color A, sc in 1st st, [ FLOdc, BLOsc3, FLOdc, BLOsc3, FLOdc, BLOsc3, FLOdc, BLOsc2, FLOdc, BLOsc3, FLOdc ] sc in last st
Row 11: With Color B, sc in 1st st, [ BLOsc2, FLOdc2, BLOsc, FLOdc3, BLOsc, FLOdc3, BLOsc, FLOdc2, BLOsc, FLOdc2, BLOsc2 ] sc in last st
Row 12: With Color A, sc in 1st st, [ FLOdc2, BLOsc16, FLOdc2 ] sc in last st
Row 13: With Color B, sc in 1st st, [ BLOsc3, FLOdc3, BLOsc, FLOdc6, BLOsc, FLOdc3, BLOsc3 ] sc in last st
Row 14: With Color A, sc in 1st st, [ FLOdc3, BLOsc3, FLOdc, BLOsc6, FLOdc, BLOsc3, FLOdc3 ] sc in last st
Row 15: With Color B, sc in 1st st, [ BLOsc7, FLOdc2, BLOsc2, FLOdc2, BLOsc7 ] sc in last st
Row 16: With Color A, sc in 1st st, [ FLOdc7, BLOsc2, FLOdc2, BLOsc2, FLOdc7 ] sc in last st
Row 17: With Color B, sc in 1st st, [ BLOsc20 ] sc in last st
Row 18: With Color A, sc in 1st st, [ FLOdc8, BLOsc4, FLOdc8 ] sc in last st
Row 19: With Color B, sc in 1st st, [ BLOsc9, FLOdc2, BLOsc9 ] sc in last st
Row 20: With Color A, sc in 1st st, [ FLOdc3, BLOsc3, FLOdc3, BLOsc2, FLOdc3, BLOsc3, FLOdc3 ] sc in last st
Row 21: With Color B, sc in 1st st, [ BLOsc3, FLOdc3, BLOsc8, FLOdc3, BLOsc ] sc in last st
Row 22: With Color A, sc in 1st st, [ FLOdc2, BLOsc5, FLOdc6, BLOsc5, FLOdc2 ] sc in last st
Row 23: With Color B, sc in 1st st, [ BLOsc3, FLOdc3, BLOsc8, FLOdc3, BLOsc3 ] sc in last st
Row 24: With Color A, sc in 1st st, [ FLOdc3, BLOsc3, FLOdc8, BLOsc3, FLOdc3 ] sc in last st
Row 25: With Color B, sc in 1st st, [ BLOsc20 ] sc in last st
Row 26: With Color A, sc in 1st st, [ BLOsc20 ] sc in last st
Row 27: With Color B, sc in 1st st, [ BLOsc, * FLOdc2, BLOsc2, rep from * 3 times, FLOdc2, BLOsc ] sc in last st
Row 28: With Color A, sc in 1st st, [ FLOdc, * BLOsc2, FLOdc2, rep from * 3 times, BLOsc2, FLOdc ] sc in last st
Row 29: With Color B, sc in 1st st, [ BLOsc, * FLOdc2, BLOsc2, rep from * 3 times, FLOdc2, BLOsc ] sc in last st
Row 30: With Color C, sc in 1st st, [ BLOsc20 ] sc in last st
Row 31: With Color D, sc in 1st st, [ BLOsc20 ] sc in last st
Row 32: With Color C, sc in 1st st, [ FLOdc, BLOsc, FLOdc, BLOsc, FLOdc, BLOsc, FLOdc2, BLOsc, FLOdc2, BLOsc, FLOdc2, BLOsc, FLOdc, BLOsc, FLOdc, BLOsc, FLOdc ] sc in last st
Row 33: With Color D, sc in 1st st, [ BLOsc3, FLOdc, BLOsc4, FLOdc, BLOsc2, FLOdc, BLOsc4, FLOdc, BLOsc3 ] sc in last st
Row 34: With Color C, sc in 1st st, [ FLOdc, BLOsc5, FLOdc, BLOsc2, FLOdc2, BLOsc2, FLOdc, BLOsc5, FLOdc ] sc in last st
Row 35: With Color D, sc in 1st st, [ BLOsc3, FLOdc, BLOsc4, FLOdc, BLOsc2, FLOdc, BLOsc4, FLOdc, BLOsc3 ] sc in last st
Row 36: With Color C, sc in 1st st, [ FLOdc, BLOsc, FLOdc, BLOsc, FLOdc, BLOsc, FLOdc2, BLOsc, FLOdc2, BLOsc, FLOdc2, BLOsc, FLOdc, BLOsc, FLOdc, BLOsc, FLOdc ] sc in last st
Free Chart for the Hollow Howler
How to Read a Chart
- Repeat = the chart between the red lines.
- Start at the bottom right corner.
- Read Right to Left for each row.
- Crochet from bottom to top of chart.

Done with the Hollow Howler Section?
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