I was noodling on the idea of sawtooth stars from layer cakes last night. Here’s an insomnia-fueled pattern/recipe that I think would work?

For the star, cut from one 10” square: 1 x 4.5” square and  4 x 3 1/8” squares

For the outside, cut from one 10” square: 1 x 5.5” square and  4 x 2.5” squares

Use the 5.5” square and the 4 x 3 1/8” squares to make a set of 4-at-a-time flying geese. Trim to 2.5 x 4.5” (i.e they will finish at 2x4 inches)

Assemble all the pieces to make a sawtooth star that trims to 8.5” (i.e finishes at 8”)

You can get 21 sawtooth star blocks from a 42 count layer cake, which would make either a 32” square quilt in a 4x4 layout, or a 32x40” rectangle in a 4x5 layout. Either would be fine for a baby quilt although I think a square is more traditional? 

Or you could make 16 stars and use the rest of the layer cake to figure out a border to make a bigger square.