In this blog post I’ll share all my tips and tricks on how to make a sprinkle fault line cake! This popular trend continues and is a fun and elegant way to make a show stopping cake for any event!

Sweetapolita sprinkle fault line cake in teal and purple

This past weekend my blog celebrated its 1st Birthday! I think it was months until I made my first recipe, I was too busy fussing over themes, layouts and logos! All the stuff that likely no one notices! Lol. sigh*  **At least I think my site is lovely!**

Regardless I wanted to try a sprinkle fault line cake:

  1. I LOVE the look of them.
  2. I had never made one and it was a new challenge.
  3. I wanted to use my Sweetapolita Sprinkles, they are gorgeous!! (They are also called “Attention to De-Tail” which even though is made to look like a mermaid tail I took it literally.  Soooo many details to pay attention to on a website!)

How to make a Sprinkle Fault Line Cake:

  1. Make your favorite kind of cake (I used 2-8″ round pans) and let the layers cool.
  2. Whip up your favorite frosting, you will need about 6-8 cups.  Try my Vanilla Buttercream Frosting, or my Swiss Meringue Frosting!
  3. Place your first cake round on a cake board, be sure to level the cake (cut off the round top to make it flat) if necessary to ensure your cake layers are even!
  4. Top with approx. 1 cup of frosting.  Level out the frosting and place the second leveled cake layer on top.  Spread a thin layer of frosting over the entire cake (Crumb Coat) to keep all the crumbs from getting into your final coat of icing.  Make sure the cake looks straight (not leaning) and place in the refrigerator for 15 minutes.
  5. Mix 1/2 cup of frosting in a colour that will show between your sprinkles. (You can leave it white but you will still be able to see it peeking between the sprinkles!)  Spread it out over the centre of the cake where your fault line will be.  Trace your fault line with a toothpick so you know where to apply the sprinkles.
    How to make a sprinkle fault line cake - draw the fault line using a toothpick
    “Draw” where you would like your fault line to be using a toothpick.
  6. Pour your sprinkles in a bowl and pick out all the larger ones.  (When smoothing the icing over the fault line the largest sprinkles would hook your icing scraper and cause it to be uneven.)  Only the smallest sprinkles get applied first!
    How to make a sprinkle fault line cake - Press the smallest sprinkles onto the middle fault line reserving the largest sprinkles until after the cake is complete.
    Press the smallest sprinkles onto the middle fault line reserving the largest sprinkles until after the cake is complete. The largest ones would stick out too far and make your next layer of icing uneven.
  7. Place your entire cake board and turntable(if using) on a baking sheet to catch all the sprinkles and using your hand lightly press all the sprinkles onto the fault line.
  8. Colour the remained of icing and place in a large piping bag fitted with a large round tip.  Fill in the cake below the fault line and above including the top of the cake.  Be sure that the icing is thicker than the sprinkles.
  9. Using a icing scraper held at a 90 degree to the edge of the cake lightly smooth out the icing.  I left the top edge a bit rustic but you can easily smooth the top edge if desired.   I didn’t have any food paint to brush on the fault line, all my cake supplies are packed in a moving truck at the moment which is also why i’m using a fancy wet cloth with saran wrap on top to keep the cake from sliding instead of a non skid mat! *Improvise!!**Sweetapolita sprinkle fault line cake in teal and purple
  10. Press the largest sprinkles into the fault line after you’ve finished smoothing to complete the cake!  Have fun!  It will look awesome! (and if all else fails it will at least taste awesome!  

Holly Hunt