Big Star Quilt Tutorial: Jenny Doan's Easy Layer Cake Star Pattern

🧵 2 dark 10" layer cake squares — your star's bold outer points. Shop precut fabrics.

🧵 2 light 10" layer cake squares — for the star's inner glow. Shop precut fabrics.

🧵 2 background 10" squares — a neutral to let your star shine. 

✂️ Rotary cutter, ruler & cutting mat — for precise diagonal cuts. Shop rotary cutters.

🪡 Sewing machine with a ¼" presser foot

🔥 Iron and ironing board — for pressing seams open

📌 Pins or clips — to keep your triangles perfectly aligned. Shop pins & clips.

Step 1: Pair and Sew Your Squares

You're going to create three pairs of 10-inch squares:

Place each pair right sides together. Now sew a ¼-inch seam all the way around the outside edge of each pair — all four sides, like you're sewing a pillowcase. This is Jenny's signature method for making half-square triangles quickly and accurately.

Step 2: Cut Diagonally Both Ways

Here's where the magic happens. Take each sewn pair and lay your ruler from corner to corner diagonally. Cut. Then turn your mat and cut the other diagonal. You've just created four half-square triangle (HST) units from each pair!

That means from your three pairs, you now have 12 HSTs total:

Press all your seams open and give each HST a good press. These should measure approximately 5 inches square.

Jenny cuts diagonally both ways to create four perfect half-square triangles from each pair.

Step 3: Build the Pinwheel Center

Take your four dark/light HSTs (the pair where dark meets light). Arrange them so the darks and lights alternate, forming a pinwheel pattern. Every other triangle should point toward the center, creating that beautiful spinning effect.

Sew the HSTs together in pairs first (two sets of two), pressing the seams in opposite directions so they nest together perfectly. Then sew those two pairs together to complete the center pinwheel block.

Step 4: Add the Star Legs

Now you're going to extend the star outward. Take your light/background HSTs and dark/background HSTs and arrange them around the pinwheel center. The colored triangle in each HST should point away from the center, extending the star's legs outward into the background fabric.

The layout follows a 4×4 grid pattern. The four dark/light HSTs form the center pinwheel, the remaining HSTs extend outward, and you can see the star taking shape. Sew the rows together, pressing seams in alternating directions row by row.

Step 5: Press and Square Up

Give your completed star block a thorough pressing. Make sure all your seams lie flat and your points are crisp. Check that your block measures correctly — all sides should be equal.

If any star points are slightly off, now is the time to square up. Lay your ruler on the block, making sure you leave a ¼-inch seam allowance beyond each star point, and trim evenly on all sides.

The finished block — look at that gorgeous star radiating from the pinwheel center!

Step 6: Add Borders and Assemble Your Quilt Top

For a single-block wall hanging, add borders directly to your finished star block. For a larger quilt, make multiple star blocks and sew them together. Here are some layout ideas:

When setting multiple blocks together, alternate the position of light and dark legs between neighboring blocks for a secondary design that will absolutely wow anyone who sees it.

Step 7: Quilt and Bind

Layer your quilt top with batting and backing, then quilt as desired. The large open areas of the star legs are perfect for showing off your quilting designs — try stippling, straight-line quilting, or even free-motion feathers in the background areas for stunning contrast.

Finish with your preferred binding method. Need a refresher? Check out our binding tutorial for Jenny's easy technique.

⭐ Accurate ¼" seams are everything. Since this quilt relies on HSTs matching up precisely, even a small seam variance compounds quickly. Test your ¼" seam on scrap fabric before starting.

⭐ Press, don't iron. Lift your iron and press straight down rather than sliding it across the fabric. This prevents stretching your bias edges.

⭐ High-contrast fabrics make the biggest impact. The more contrast between your darks, lights, and background, the more dramatic your star will look. Jenny uses bold colors against a neutral background for maximum wow factor.

⭐ Starch is your friend. A light spray of starch before cutting helps stabilize the bias edges of your half-square triangles and keeps everything nice and crisp.

⭐ Nest your seams. When sewing rows together, press seams in opposite directions so they lock together perfectly at the intersections. This gives you flawless points every time.