Easy Hidden Star Quilt Block Tutorial

Looking for a classic quilt block with a touch of intrigue? The Hidden Star block is a beautiful 12″ traditional design that’s simple to piece but makes a striking impact. Perfect for beginners or anyone wanting a quick, satisfying project, this block comes together using just Half Square Triangles (HSTs), Square-in-a-Square units, and a center square. Whether you’re adding it to a sampler quilt or making a full quilt of stars, the Hidden Star is a timeless favorite that shines with any fabric style. Let’s dive in!

Fabric Requirements for a 12″ Finished Hidden Star Quilt Block:

Light/Ivory: 2 – 5″ squares, 1 – 4.5″ square, and 8 – 2.5″ squares
Medium/Tan: 8 – 2.5″ squares
Dark/Purple: 2 – 5″ squares, and 4 – 4.5″ squares

Sewing Directions:

Half Square Triangle Units:

Step 1:

Using the Light/Ivory 5″ squares and Dark/Purple 5″ squares, sew together four Half Square Triangle (HST) units as shown in the picture below. Trim/square up the units to 4.5″ square. You can find the tutorial for making a basic Half Square Triangle block at https://quiltembroiderypdf.com/how-to-sew-a-basic-half-square-triangle-block

Square in a Square Units:

Step 2:

Piece together four Square in a Square units like the ones in the picture below using the four Dark/Purple 4.5″ squares, the eight Light/Ivory 2.5″ squares, and the eight Medium/Tan 2.5″ squares.

You will find my tutorial for making a basic Square in a Square block at https://quiltembroiderypdf.com/how-to-sew-a-basic-square-in-a-square-block

Be sure to put the Light/Ivory squares adjacent to each other (and the same for the Medium/Tan squares).

Putting It All Together:

Step 3:

Lay out the Half Square Triangle units, the Square in a Square units, and the Light/Ivory 4.5″ square as shown in the picture below.

Step 4:

From here the block goes together just like a Nine Patch block. First you sew the units in three rows.

Step 5:

Press the seam allowances away from the Square in a Square units as shown below.

Step 6:

All that’s left is to sew the three rows together.

Step 7:

And press the seam allowances toward the center of the block. You’re done!

Layout Ideas:

Here’s the basic 4 x 4 layout using colors similar to the tutorial.

This version of the basic 4 x 4 layout had sashing and cornerstones.

For this example I used a large Hourglass block for an alternating block.

This alternating example uses a simple Shoo Fly block for the alternating block.

Here’s a monochromatic coloring with a simple alternating chain block. I also changed the center square to the same color as the star points so that the star isn’t so “hidden”.

This is an on-point layout with a chain block used as an alternating block and for the setting triangles.

This example of an on-point layout has narrow sashing and cornerstones and the light green background fabric used in the setting triangles. I also added in an additional color.

Another on-point layout using the Hourglass block for the alternating block and for the setting triangles.