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Birthday Cake Soap

Filed Under: Melt & Pour Soap

Difficulty: Intermediate
Time: 2 - 3 hours
Yields: 7 soaps

Who doesn’t love birthdays? There’s always plenty of sweets, frivolity and maybe even a few presents. Best of all, birthdays are opportunities to get together with family and friends to celebrate! Of course, no birthday is complete without a birthday cake. This fun (obviously Lily-inspired) Birthday Cake soap was adapted from a tutorial our friend Debbie of Soapy Love did several years ago, and we’ve added a few special twists of our own. A little frosting, plenty of glitter and lots of bright, deliciously scented layers will make this cake a hit at any party.

What You’ll Need:

For the cherries

6 oz. ClearMelt & Pour base

Perfect Red Color Block

Medium 9 Ball Silicone Mold

For the cake

46 oz. White Melt & Pour base

12 mL Hungarian Lavender Essential Oil

5 ml Buttercream & Snickerdoodle Fragrance Oil

7 mL Creamsicle Cybilla Fragrance Oil

Ultramarine Violet Color Block

Tangerine Wow Color Block

5 mL Vanilla Color Stabilizer

10″ Silicone Loaf Mold

For the frosting

8 oz. White Melt & Pour Base

2 oz. Liquid Castile Soap Base

3 mL Buttercream & Snickerdoodle Fragrance Oil

3 mL Vanilla Color Stabilizer

Click here to add everything you need for this project to your Bramble Berry shopping cart!

Part One: Make the Cherries

ONE: Cut 6 oz. of Clear Melt & Pour into small cubes and put into a heat-safe container. You can also cut up the Perfect Red color block and add them to the cubes. Color blocks are WYSIWYG, so add more of the block for a darker color. Note: The Perfect Red color block is a non-bleeding color. That’s important for this design. Not sure what “Non-Bleeding” means? We have you covered here with an explanation.

TWO: Melt the soap on 30 second bursts, stirring between each heat. Once the soap chunks are fully melted and the colorant is incorporated, pour into the silicone mold.

THREE: Spray the soaps with isopropyl alcohol and allow to sit for 1 – 2 hours before unmolding.

 

Part Two: Make the Cake

ONE: Cut and melt 12 oz. of White Melt & Pour base in a heat safe container. Heat the soap on 30 second bursts, stirring between each heat. Shave off chunks of the Ultraviolet Color Block and add into the mixture until you reach your desired color. Add 4 mL of Hungarian Lavender essential oil and stir until the oil and color have been fully incorporated into the soap.

TWO: Pour the lavender soap into the loaf mold and spray liberally with isopropyl alcohol.

THREE: Allow the soap to form a thick skin on top but remain soft enough so that you can push a dent into it with your finger. Using an object with a blunt end, make grooves in the soap from end to end. We used the end of a paint brush to make three grooves. Use a clean up tool to tidy up the grooves or any soap that ended up on the sides of the mold.

FOUR: Set the mold aside and start making the second layer. Cut and melt 8 oz. of White Melt & Pour base and add 5 mL of ButterCream & Snickerdoodle Fragrance oil. Because this oil contains vanillin — which discolors soap — add 5 mL of Vanilla Color Stabilizer to keep the soap white. It’s important to do the layers quickly one right after another as soon as the first layer is hardened to give the layers the best chance of adhering to one another.

FIVE: Spray the purple layer with isopropyl alcohol, and then pour the white layer. Be sure the lavender soap has hardened to the point where the white soap wont break through.

SIX Once the white layer has solidified but not fully hardened, use the same technique as before to make grooves in the white soap.

SEVEN: Cut and melt 12 oz. of White Melt & Pour base in a heat safe container. Heat the soap on 30 second bursts, stirring between each heat. Shave off chunks of the Tangerine Wow color block and add into the mixture until you reach your desired color. Add 7 mL of Creamsicle Cybilla fragrance oil and stir until the oil and color have been fully incorporated into the soap.

EIGHT: Spray the white layer with isopropyl alcohol, and then pour the orange layer. Be sure the white soap has hardened to the point where the orange soap wont break through.

NINE: Cut and melt 14 oz. of White Melt & Pour base in a heat safe container. Heat the soap on 30 second bursts, stirring between each heat. Shave off chunks of the Ultramarine Violet color block and add into the mixture until you reach your desired color. Add 8 mL of Hungarian Lavender essential oil and stir until the oil and color have been fully incorporated into the soap.

TEN: Spray the orange layer with isopropyl alcohol, and then pour the lavender layer. Be sure the orange soap has hardened to the point where the lavender soap wont break through.

Part Three: Make the Frosting

 ONE: Cut and melt 8 oz. of White Melt & Pour base. Pour into a larger container, and then add 2 oz. of Liquid Castille Soap Base. 

 TWO: Add 3 mL of Buttercream & Snickerdoodle fragrance oil. Because this oil contains vanillin — which discolors soap — add 3 mL of Vanilla Color Stabilizer to keep the frosting white.

THREE: Whip the ingredients together with a hand mixer. Start out on medium, and turn up the speed to high after one minute. Mix until the frosting forms peaks.

 

Tip: This mixture will foam up and grow very quickly! Spray with a  bit of isopropyl alcohol as you mix to keep it from flowing over the sides of the container.

FOUR: Use a spatula to quickly frost the top of the soap.

FIVE: Wait a few minutes for the frosting to firm up before placing the cherries.

Finish off with a little iridescent glitter on top and you’ve got yourself a soap that looks good enough to eat!

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28 Comments

  1. Hi Jackie!

    You can add dried fruit powder, just keep in mind that these powders may turn brown in your soap. Natural powders like coffee, cocoa and nutmeg all work great in soap! What type of powder were you thinking about using? 🙂

    -Amanda with Bramble Berry

  2. Hi First off I love your products . I have a question that I can’t find the answer to can you add freeze dried fruit powder to melt and pour soap ? Thanks and keep up the fantastic work!

  3. I don’t have any liquid castile soap on hand..was wondering if you can replace it with liquid glycerin for the frosting for the same effect?

  4. Hi there!

    I made this soap last night and it was my first ever soap! It was a lot of fun and my kitchen smells AMAZING. However, I’m hoping to get some advice on two things:
    1) Any tips on de-molding? I’ve pulled the sides away from it, but the loaf doesn’t want to budge.
    2) Any tips on mixing the color blocks? I thought I had done a fairly decent job but I see lots of speckles of color in the soap (the cherries on top and I can see through the mold on the bottom).

    Thank you!

    • Just put the entire block in the fridge for 20 minutes and see if that helps with the unmolding =) You are right to be gentle, gentle.

      If you mix a little warmer, I’m betting those color speckles will go away =)

      I’m so glad you tried the project!

    • Hi Kathy!

      As long as the layer below has hardened enough for you to pour another layer on-top without breaking the surface, you should be just fine. I would say anywhere from 10-15 minutes in between layers! I hope this helps. =)

      Happy Soaping!
      -Becky with Bramble Berry

  6. Could you substitute the Liquid Soap Concentrate for the Liquid Castile Soap Base?

  7. Hi 🙂 I have made a couple of your melt and pour kits and love doing it each time!! My oldest will be 18 in July and she saw these and told me I have to make them as favors for her guests 🙂 I’m making the Aloha soaps hopefully today. I also have a 19 month old and am currently 8 1/2 months pregnant with our 3rd girl 🙂 I have a couple of projects that I bought as kits on your site and each one I love and am blown away by how much each kit makes 🙂 I am a loyal forever Brambleberry customer and as soon as I am able will post pictures of my creations on your fb page. I am awaiting my very first cp kit as we speak. I’m nervous I will mess up but excited at the same time 🙂 Watching your videos and researching each night when my little one is asleep. I can’t wait to see how everything turns out 🙂

  8. Pretty! But now this is just weird…

    One of your e-mails was about this soap tutorial, then came another one about how the advance copy of your book was ready and how you’re still taking pre-orders. (I’ve already pre-ordered – can’t wait!) I briefly skimmed it earlier, but when I went back to it to read again, it linked me back to this birthday cake soap! ??? 🙂 Where’d it go?

    • Hi Amal!

      We don’t suggest adding any extra oils or butters to your melt and pour bases because it can actually change the consistency of your final product. However if you’ve already purchased your Melt & Pour base you can get away with adding no more than 1 tablespoon per pound of Shea Butter to your M&P base without drastically changing the consistency of it. M&P soaps have actually cured, and the only time you need to let a soap recipe cure is when you have used lye in your recipe.

      If you wanted to have shea butter in your M&P, I’d actually suggest using our Shea Butter Melt and Pour Melt and Pour Base! You could sub out the white melt and pour base in this project for the shea.

      Shea Butter Melt & Pour Base: https://www.brambleberry.com/Shea-Melt-and-Pour-P3192.aspx

      I hope this helps! Let me know if you have any other questions. 🙂

      -Becky with Bramble Berry

  10. That is so cute!! I’m going to have to keep working on the frosting part because that tends to solidify on me before I have a chance to make it look pretty.

    • Hi Monica!

      We know you can do it! What’s great about the frosting is that anyway it turns out, it is still soap and will look great on your products. 🙂

      Happy Soaping!
      -Becky with Bramble Berry

  11. ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh….love it !!!…♥…super pretty and the frosting…the frosting kills me!!!..looks so great, pretty an fabolous….I am going to try it…thank you for the tutorial pretty Super-Queen….xoxo~ ♥

    • Hi Maria!

      We can’t wait for you to try this technique out, and I know you are just going to WOW us with your soap. We’ll definitely be keeping an eye on Bramble Berry’s Facebook page to see your pictures. 🙂

      Happy Soaping!
      -Becky with Bramble Berry

  13. GORGEOUS! I love it – I love that you used the M&P to make this (since I haven’t gotten brave enough to try cold process yet, lol). I can’t wait to try this! Yummy!!

    Elaine

    • Good morning!

      We are so glad that you enjoyed this soap, it is such a fun design that can be customized for any type of birthday party! We hope you get a chance to try it out. 🙂

      -Becky with Bramble Berry

  15. Does the frosting harden up, or stay a little soft? And would other melt and pour soap bases work as well, like goat’s milk or shea? Thank you! Looks great, can’t wait to try it!