Scrappy Triangles Quilt Block Tutorial

Simple shapes and scraps make this a fun block to sew!

Looking for a quilt block that features half square triangles and can be made from your scraps?

I was inspired by an image of the layout of the Missouri Quilting Company's beautiful Falling Triangles Quilt and scaled down their free quilt design into a 12" x 12" (finished size) quilt block.  This is a fun and easy block to sew and a great one for using up smaller sized scraps.

 Scrappy Triangles Quilt Block:

  • Cut 16* pink fabrics @ 3" x 3" 
  • Cut 16* low volume fabrics @ 3" x 3"
  • Cut 16 low volume fabrics @ 1.5" x 2.5"
  • Cut 16 low volume fabrics @ 1.5" x 3.5"
*Note that using 16 different pink and 16 different low volume fabrics to make the half square triangle units, you will have no fabric repeats; PLUS you will have twice the needed half square triangle units for a single block (so you will have enough to make a second block!).

  1.  Pair up, right sides together; a pink and a low volume 3" x 3" square **. Mark a diagonal line on the wrong side of one square.  
** There will be 16 pairs of squares.  

2.   Sew 1/4" seam on either side of the marked line. Cut along marked diagonal line.

Note: Each pair of squares will yield two half square triangle units (HST).  Set one HST from each set aside, if you wish to keep the finished block without any repeating fabrics.

3.  Press seam towards pink fabric. Trim half square triangle units to 2.5" x 2.5".

4. Select one 1.5" x 2.5" low volume fabric rectangle and one 1.5" x 3.5" low volume fabric rectangle and place (as shown above) alongside the half square triangle unit.

Important: Note that the low volume rectangles are framing the pink half of the HST unit.

5. Sew 1.5" x 2.5" rectangle to the HST (as shown above) and press seam towards the rectangle.

6. Sew 1.5" x 3.5" rectangle to the HST (as shown above) and press seam towards the rectangle.

7. Repeat steps #1-6; to make a total of 16 HST units framed by low volume fabrics.

8. Using the above photo as a guide; layout out the 16 HST triangle units in a four by four grid placement.

9.  Sew four individual HST units into rows and the sew the four rows together. Press seams open. The completed block will measure 12.5" x 12.5".

Ta-da!  One scrappy triangles quilt block done!

Happy, scrappy sewing!


  1. Love this block! The pink is great. Where do you get all your wonderful low volume prints? Luscious.

  2. Katherine, this block is so sweet! I always love using up my scraps.
    This is super adorable

  3. This looks great! I bet it would look nice in any color volume.

  4. thank you I'm a beginner and this is right up my alley.

  5. Thank you so much , your tutorial is marvelous!

  6. This just came up on my Pinterest feed, and I wasn’t the least bit surprised to find it leads to you! Love it!

  7. Love it! Deanna pointed us here, and I've been watching hers develop. It's perfect for SO many things!

  8. This looks so cute. I can't wait to start!

  9. Love it!! And I already have triangles cut.

  10. I have a stack of HST left over from another quilt that had lots of "snowballed" corners that will be perfect for this block! Thanks for sharing!

  11. I made this and it is one of the prettiest quilts I have. Thank you so much.


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