The next time you use an onlay mold try creating a two-tone fondant effect. Today, I show you how I created this two-tone onlay design using the new onlay mold piped perfection from Marvelous Molds. It's a simple and easy technique with a huge wow factor on your cake. Whether you use it on a single-tier cake or a multi-tiered cake this has got to have people asking how you did it.

This week I was commissioned to make a 50th birthday cake for a lovely lady I've known for over 5 years. I've been making cakes for her family all these years but this was the first time I made one for her.
As always, she trusts me with her cakes and to her, the cake flavor and tastes are most important. If she had a choice she's be taking only naked cakes. But she loves my simple, classic cakes that are not crowded.

She sent me this message
"Veena, it's my birthday on the 25th September and the whole family will be here to celebrate especially because it's the festival of Sukkot. Since it's my 50th, I think they are right that we should celebrate with cake.
You know my favorite of your cake flavors has got to be the chocolate mud cake or the carrot cake I tasted (I still remember the carrot cake you made for us to taste but we could not order for Ethan?) with the meringue buttercream and dark chocolate sauce. Think you can make one of those double tier cakes you made for my mom last time? We still remember the hand-painted black very fondly. I really loved that black effect. But don't pain it, keep it simple. We liked those molds kinda stuff you used for Maya's wedding - doesn't have to be same, something tasteful but simple.
If you have time a flower would be lovely. I love poppy but something more fuller would be lovely as well. Mark will come to pick the cake on the 25th on his way here so I will ask him to call and set up the time for pickup".
Don't you wish all customers were like this? They know what they like, want and yet they give you enough space to do what you think is best.

The ingredients of this cake (Save/Pin)
- Cake recipe - the bottom cake was chocolate mud cake which she ordered and the top cake was carrot cake which I made for her as a special gesture. A special customer must be treated special, right. You could use any of my recipes from the layer cake section.
Tip - In the recipe card below each post, you can change the number of servings to increase or decrease the recipe. For example, if you need two 8-inch cakes just type 24 servings and the recipe will automatically calculate that for you. My cake serving chart has the number of servings for your cake pans. - Filling - I have used Swiss meringue buttercream for this cake but you can use any of my other buttercream recipes like Italian meringue or velvet American buttercream. In fact, my chocolate mud cake recipe on the blog is accompanied with caramel buttercream
- Frosting - You can use the above buttercreams to fill and frost but I have used dark chocolate ganache recipe.
- Fondant - This is black Satin Ice fondant today. The red fondant I used to fill in the mold is my marshmallow fondant.

Tools - Molds
The most important tools I used for this cake was, of course, the mold from Marvelous Mold. Last week, I received these three amazing molds and I could not wait to use. The three new molds are Tri-weave, piped perfection, and geometric illusion. Click to see the molds.
I'm always excited when I get new cake toys, especially when Marvelous Molds sends me new molds but I'm actually thrilled to get these Geometric Illusion ones. Why?
Because I'm am terrible at these geometric cake. In fact, I have none. Call me OCD but these designs make me feel handicapped. They confuse me. So a mold would be the only way I would ever get close to making a geometric design. In fact, I have a cake next week, I can use a mold but I need to still here from the customer if she will let me use this Optical Illusion or this Tri-weave as compared to the other simpress onlay she chose.
Those of you following me on Instagram must have seen the unedited version (sneak preview) of this tutorial and finished onlay when I shared in my Instagram stories two days ago.
Well, I have finally edited the video so I can share with you how I used this mold - pipe perfection. Of course, I have used the onlay vertically but if you use it horizontally you can create a very seamless design for the whole cake.
A few tips as seen in my video (Save/Pin)
- Depending on your weather brush the mold with cornstarch or veg shortening. Here in summer cornstarch works better but for this mold, the veg shortening did a better job for me.
- It does take a few minutes to get the flow right on how to scrape the excess so be patient and take your time. Making a few practice ones will help.
- Use a blunt, small offset spatula so you do not cut the mold. NEVER ever use a knife when working with molds.
- If you live in a hot and humid climate - let the mold chill in the fridge for five minutes. Chilled fondant is easier to handle. I have explained this technique in my previous post - how to use silicone onlays in summer.
- Attache the onlay to the cake with water, glue, sugar syrup. I have used vegetable shortening in my video. I always use vegetable shortening when I can to stick the fondant to cakes.
Save this tutorial on Pinterest for later. Tried my recipe? Share it with me, please.
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You can find a collection of my tutorials and recipes here on Pinterest.

Two-Tone Onlay Tutorial with Simpress Piped Perfection
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Video
Conversions Used
1 lb = 453 grams, 1 cup = 240 ml, 1 stick = 113g, 1 tbsp= 15 ml, 1 tsp= 5 ml,
Ingredients
- 4 layers Double Barrel Cake
- 2 layers Chocolate Mud Cake
- 2 layers Moist Carrot Cake
- 200 grams Fondant Recipes
- 200 grams Gumpaste Recipes
- 500 grams Vanilla Buttercream Frosting
- 1 kg Black Fondant
- 1 kg Chocolate Ganache
Instructions
- Cake recipe – the bottom cake was chocolate mud cake which she ordered and the top cake was carrot cake which I made for her as a special gesture. A special customer must be treated special, right. You could use any of my recipes from the layer cake section.
- Filling – I have used Swiss meringue buttercream for this cake but you can use any of my other buttercream recipes like Italian meringue or velvet American buttercream. In fact, my chocolate mud cake recipe on the blog is accompanied with caramel buttercream
- Frosting – You can use the above buttercream to fill and frost but I have used dark chocolate ganache recipe.
- Fondant – This is black Satin Ice fondant today. The red fondant I used to fill in the mold is my marshmallow fondant.
DECORATE THE CAKE
- Cover the cakes with fondant and have them ready.
- Use the silicone molds and fondant to create two onlay as shown in the video below
Recipe Notes & Tips
Depending on your weather brush the mold with cornstarch or veg shortening. Here in summer cornstarch works better but for this mold, the veg shortening did a better job for me.
It does take a few minutes to get the flow right on how to scrape the excess so be patient and take your time. Making a few practice ones will help.
Use a blunt, small offset spatula so you do not cut the mold. NEVER ever use a knife when working with molds.
If you live in a hot and humid climate – let the mold chill in the fridge for five minutes. Chilled fondant is easier to handle. I have explained this technique in my previous post – how to use silicone onlays in summer.
Attache the onlay to the cake with water, glue, sugar syrup. I have used vegetable shortening in my video. I always use vegetable shortening when I can to stick fondant to cakes.
Nutrition Information
The nutrition information and metric conversion are calculated automatically. I cannot guarantee its accuracy. If this data is important to you please verify with your trusted nutrition calculator. Thank you
Did you try my recipe? Leave a feedback. Have a question about the recipe? Happy to answer.