This easy two-toned knit pillow uses the simplest of stitches to create a modern geometric design. Gauge isn’t crucial, because you just knit until the size is right.

Instructions for the pattern are listed for free below, but if you’d like an easy-to-print and easy-to-carry ad-free version, buy the pdf.

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The Yarn
Medium-weight (worsted-weight) yarn is easy for beginners to use. Lion Brand Feels Like Butta has a dreamy-soft feel that you really want to snuggle up to!
I choose Pale Grey and Charcoal for a modern neutral palette, but the yarn comes in eighteen colors, so you are sure to find a couple of colors that appeal to you. It only takes one ball of each color.
The Pattern

Garter stitch is the first stitch pattern that beginners learn, because there’s no purling involved. But that doesn’t mean it’s not a versatile stitch! You can do all sorts of incredible things with just garter stitch!
Matching the pattern gauge is always important, but sometimes it’s more important than others. In this pattern, you want to at least get close to the pattern gauge so the fabric you are knitting is tight enough and so you don’t run out of yarn. However, don’t fret if it’s not EXACTLY the same; you have a little bit of leeway so you can knit until the size is right.
Easy Two-Toned Pillow
One Size: 12″ [30.5 cm] square
Materials
Lion Brand Feels Like Butta Yarn (100% polyester, 3.5 oz [100 g], 218 yd [199 m]), 1 ball each #150 Charcoal (A) and 149 Pale Grey (B)
US Size 7 [4.5 mm] knitting needles or size to obtain correct gauge
2 stitch markers or bits of waste yarn
Tapestry Needle
12″ {30.4 cm] square pillow insert
Gauge
21 sts and 42 rows =4″ {10 cm] in garter stitch. Although gauge is not crucial in this pattern, it’s is best to take time to check gauge. Watch How to Measure Gauge in Knitted Garter Stitch.
Abbreviations
garter stitch: knit every row
k2tog: knit two stitches together
kfb: knit in front and back of one stitch
RS: right side
st(s): stitch(es)
WS: wrong side
Instructions
Make 2 pieces alike, as follows:
With A, long-tail cast on 3 sts.
Row 1 (WS): Knit.
Row 2: Knit to last 2 sts, kfb, k1—1 st increased.
Place a marker on the front of the row just knit to indicate the right side of the fabric.
Repeat Row 2 until there are 85 sts on the needle, or until one shorter edge of the piece measures about 11″ [28 cm], ending by working a WS row. Cut A, leaving a 6″ [15 cm] tail.
With B, knit to last 3 sts, k2tog, k1—1 st decreased.
Repeat this row until 3 sts remain.
Bind off.

Finishing
Weave in ends.
Hold pieces with wrong sides together and with colors matching.
With tapestry needle, sew around three edges using mattress stitch andmatching yarn color.
Insert pillow form. Sew final seam. Weave in ends.
Other Projects
Check out these other easy knitting patterns:
Love this design! To make an 18” cover, would you recommend just continuing until there are ~140 stitches? (Got that from some quick triangle math ) Or some other method? Thank you!
Yes, just keep going to the size you want. I haven’t stopped to do the math, but keep in mind that you want it to stretch just a bit, so don’t go all the way to the full width.