How to Sew a Mug Cozy

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Learn how to sew a mug cozy for the perfect fall accessory. Use quilting cotton for an easy beginner sewing project that makes a great handmade gift!

There are lots of things I love about the Fall and colder weather, but one of my joys is drinking a hot drink from a mug. I switch around with lots of different kinds of drinks, but there’s something so cozy and special about holding a warm mug in my cold hands and smelling the wafting steam of my drink.

Sometimes I’m working or reading while I drink from a hot mug, and the heat dissipates too quickly. I made a simple mug cozy to put around any of my mugs to help keep it warm for longer, and I’ll show you how to make your own mug cozy! It’s such a fun beginner sewing project!

How to Sew a Mug Cozy

I used a really pretty fall print that I enjoy every time I see it. It’s a muted pink with little scattered fall leaves all over it. It looks really good against the large wooden button.

I can’t wait to use it throughout the fall, and I’ll probably make another mug cozy for the holidays and winter.

How to Sew a Mug Cozy

What fabric should I use for a mug cozy?

The best fabric to use for a mug cozy is cotton fabric like quilting cotton. It is easy to sew, easy to wash, and it does well with both hot and cold.

How should I insulate a mug cozy?

Make sure to use some sort of batting in between the fabric layers to give extra insulation. There are lots of different kinds of batting with varying degrees of warmth. I went with some fusible fleece I had on hand to make it easier, but do the research to find what’s best for you.

Don’t place the mug cozy in the microwave, unless you’ve specifically used the right materials. You could ruin your microwave and mug cozy if you aren’t careful!

How to Sew a Mug Cozy

Do you love to sew? Try one of these sewing projects:

How to Sew a Mug Cozy

How to Sew a Mug Cozy


Sew a Mug Cozy supplies

First, measure the circumference of your mug. I used a standard mug so you can use my measurement, 10 inches, if you have a similar standard mug.

measure around mug

Measure the height of your mug. Mine was almost 4 inches tall.

measure height of mug

Add 1/4 inch seam allowance to your measurements. Cut out two fabric rectangles, one fusible fleece rectangle, and one interfacing rectangle. I cut my rectangles 11 inches wide and 3 inches tall. I wish I would have cut them slightly wider and slightly taller like 11.5 inches wide and 3.5 inches tall.

cut out two rectangles of fabric, one interfacing rectangle, and one fusible fleece rectangle

Fuse the interfacing to one fabric rectangle and the fusible fleece to the other fabric rectangle.

fuse interfacing and fusible fleece to fabric

Cut the elastic to 3 inches. Fold it in half and pin it to one short end of a fabric rectangle. Baste it in place 1/8 inch from the edge.

pin elastic to short end of one rectangle

Place the two fabric rectangles right sides together matching up corners and edges and pin.

pin rectangles right sides together

Sew around the edge with a 1/4 inch seam allowance and leave a 2 inch hole for turning. Pivot at the corners and backstitch when you start and when you stop.

sew around rectangle and leave hole

Trim the corners to reduce the bulk.

trim corners

Turn it right side out and poke out the corners. Press the mug cozy flat. Make sure that the seam allowance at the hole is tucked inside when you press.

turn right side out and press flat

Edgestitch 1/8 inch from the edge all the way around. When you sew over the hole it will close it.

edgestitch around the edges and close the hole

Tape the button at the edge of the short side without the elastic.

tape large button to side opposite of elastic

Sew the button on by hand or sew the button on with a sewing machine.

sew button onto mug cozy

Attach your mug cozy onto a mug with the elastic loop attaching to the button through underneath the handle. You finished!

attach to a mug

If you make something using this pattern, I’d love to see! Please share it on social media with the hashtag #heatherhandmade and tag me!

How to Sew a Mug Cozy

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