Rainbow Smash Cake + Pastel Cupcakes Tutorial Ombre Buttercream & Baby’s 1st Birthday Kutiwa Cakes

Welcome back to Kutiwa Cakes, where every cake is a celebration — and this one? It’s bursting with color, joy, and baby’s first birthday magic! 🎉🎂 In today’s video, I’m decorating an adorable 5-inch rainbow smash cake with a layered pastel fault line design, topped off with 12 dreamy matching cupcakes in an ombre buttercream swirl. This is one of my favorite aesthetic projects yet!

🌈 About This Cake:

Size: 5-inch mini cake (perfect smash size!)

Flavor: Classic vanilla sponge

Design: Pastel rainbow fault line with fondant clouds + sprinkles

Occasion: A smash cake for a 1-year-old’s birthday photo shoot

Cupcakes: 6 vanilla + 6 Oreo cupcakes with rainbow swirl buttercream

👶 What is a Smash Cake?
Smash cakes are specially made for babies turning one! They get to dig in, smash it, and get messy for the cutest birthday photos ever. This cake was requested by a returning client — I made her baby shower cake too! Full circle moment 💞

🎨 Color Palette Used (Food Gel Colors):

Pink (Sugar & Crumbs)

Sunset (Sugar & Crumbs)

Yellow (Sugar & Crumbs)

Leaf Green (Wilton)

Navy Blue (Sugar & Crumbs)

Purple (AmeriColor)

Each color was carefully blended with 2–3 drops of gel for a soft pastel finish — perfect for baby’s first cake moment!

🧁 Cupcake Magic:
Using leftover buttercream, I created a pastel swirl using the cling film sausage method (yes, it’s as fun as it sounds). The swirl came out buttery-smooth and visually STUNNING.

Piping tip: [Will be added on-screen in video]

Technique: Layer buttercream in cling film, roll like a sausage, insert into a pre-tipped piping bag

Final touch: Glitter spray ✨ and fondant clouds for extra dimension

🌀 Why the Fault Line Style?
The mom wanted a “rainbow the baby can grab with both hands” — so instead of a subtle ombre, we went for a layered rainbow fault line that’s textured, vibrant, and packed with charm. It’s also a sweet throwback to her baby shower cake I made last year… except this time, it’s pastel perfection!

🌟 What Makes This Video Special:

Full cake + cupcake decorating walkthrough

Real-time visual mixing and color swatching

Unique piping bag technique using cling film

Honest behind-the-scenes moments: freezer breaks, smudge control, and all

Sentimental storytelling tied to baby’s first birthday

👀 Visual Inspiration:
This cake reminds me of those classic rainbow stacking toys you had as a kid — soft, stackable, and sensory magic. That nostalgic, playful vibe made this one extra special.

💡 Tips Covered in This Tutorial:

How to create smooth ombre layers

Using cling film to achieve multi-color piping with no mess

Keeping color transitions clean and distinct

Texture and detail work for fault line cakes

Glitter spray finishing for that polished, party-ready look

📦 What You’ll Need (Suggested Tools):

Piping tips: Round, rosette, and cloud tips

Cling film

Offset spatula

Gel food coloring (brands listed above)

Sprinkles + edible glitter spray

Fondant for clouds

Cupcake liners and baking tins

📸 Perfect For:

1st birthday photo shoots

Gender-neutral pastel themes

Rainbow and cloud-themed parties

Soft aesthetic cake lovers

Beginner-to-intermediate decorators

📌 Related Videos You’ll Love:

White Chocolate Ganache Mini Cake Tutorial

Coquette Aesthetic Cake for Girlfriend’s Birthday

Pastel Petal Drop Line Cake Design

✨ Subscribe to Kutiwa Cakes for weekly tutorials, creative cake design ideas, and a little behind-the-scenes baker honesty. We keep it cute and real here 💕

💬 COMMENT BELOW:
Which do you prefer — traditional ombre or layered fault line? And have you ever tried the cling film piping hack? Let’s chat below!

🎥 Thanks for watching and supporting this sweet little corner of the cake world. Your views, likes, and comments mean the world — and if this video made you smile, don’t forget to hit that subscribe button and share with your fellow cake lovers! 💕

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Видео Rainbow Smash Cake + Pastel Cupcakes Tutorial Ombre Buttercream & Baby’s 1st Birthday Kutiwa Cakes канала KutiwaCakes