Banana Smash Cake for Baby (Healthy First Birthday Cake)

Originally posted December 2021.

Updated June 2026. This banana smash cake has become one of the most-loved recipes here on Urban.Apron. Years later, it still makes me smile thinking about George’s first birthday and those messy little frosting-covered fingers!

Banana Smash Cake for Baby’s First Birthday

I can hardly believe I’m updating this post years later! This banana smash cake was the cake I made for George’s first birthday, and now he tells me he’s a big kid …who still loves helping me in the kitchen. :)

If you’re a first-time mama finding this post while planning your baby’s first birthday… take a deep breath. I remember being exactly where you are.

Searching for a simple, healthier smash cake recipe, wondering how an entire year could have gone by so quickly.

The first year of motherhood is a beautiful whirlwind. The newborn days can feel long and exhausting, but somehow you blink and your tiny baby is blowing out a first birthday candle.

When George turned one, we were also very much adjusting to life as a family of five.

Going from two kids to three was our biggest transition yet. There were moments of chaos (okay… many moments), lots of laundry, a lot less sleep, and plenty of days where the house felt like a complete circus. It’s been tough and I am not gunna sugar coat it (of course it’s so worth it, but that doesn’t cover up the fact that it’s really hard).

But I also learned something very important during that season: lower the expectations, stop chasing perfection, and soak up the little moments.

The messy, simple moments that are not perfect are what stick with you. I’ve learned to stop worrying so much. Embrace all the small, special moments that make big memories.

Speaking of messy and moments… let’s get to this smash cake.

Why you’ll love this Banana smash cake RECIPE

First of all… what even is a smash cake?

Basically, it’s a small cake you set in front of your baby when you sing “Happy Birthday” and let them take the first bite - which usually turns into them sticking their hands right into the frosting.

Kind of wild that this has become such a first birthday tradition, but I have to admit, it’s a pretty sweet memory to capture.

With George, he took a little taste of his banana smash cake, played around with it, and then we cut the rest and enjoyed it as a family. A smash cake is really just a fun way to celebrate your baby turning one (and yes, get those messy face photos!).

Why you’ll love this banana smash cake recipe.

This healthy banana smash cake is naturally sweetened with banana, applesauce, and maple syrup. It has the perfect soft texture for babies, and the maple whipped cream frosting makes it feel extra special for a first birthday celebration.

Whether you’re planning a first birthday party or simply celebrating your little one at home like we did, I hope this simple homemade smash cake becomes part of your family’s memories, too!

This banana smash cake is made with simple ingredients, comes together quickly, and can easily be made ahead for your baby’s first birthday celebration.

If you make this banana smash cake, tag me @urban.apron on Instagram, I love to see it and connect!! And for more motherhood moments, recipes and just real life, be sure to subscribe to my newsletter here- would love to have you there!

Banana Smash Cake RECIPE for Baby

Banana Cake

• 1 cup all-purpose flour

• 1/2 teaspoon baking soda

• 1/2 teaspoon baking powder

• 1/2 teaspoon cinnamon

• 1 ripe banana (medium-large size)

• 1/3 cup unsweetened applesauce

• 1/4 cup milk

• 1/4 cup pure maple syrup

• 1 egg

• 1 teaspoon pure vanilla extract

Instructions:

1. Preheat oven 350 degrees.

2. Butter cake pans and dust with flour. You can use 2 four-inch or 2 six-inch cake pans. After I butter and flour the pans, I cut a circle out of parchment paper and place it at the bottom of each pan for easy cake removal.

3. Whisk together the dry ingredients and set aside.

4. In a medium to large bowl, whisk together the banana, applesauce, milk and maple syrup until well combined and very few banana pieces remain. Whisk in egg and vanilla

5. Add in the flour mixture and mix with a spoon until combined.

6. Pour batter in cake pans and bake for about 20 minutes until toothpick comes out clean. let cool and then run knife around cake and invert them out. (I used two 6-inch cake pans. You could also do 4-inch cake pans for a thicker cake.)

7. Frost with whipped cream frosting. (recipe below!)

Maple Syrup Whipped Cream Frosting

• 1 cup heavy whipping cream (coconut cream will also work)

• 2 Tablespoons maple syrup

• 1/2 teaspoon pure vanilla extract

Instructions:

1. In a mixer with the whisk attachment, whip all of the ingredients on high for several minutes until it forms a whipped cream and stiff peaks.

2. Store in fridge until ready to frost the cake.

FAQ’s

What is a baby smash cake?
A smash cake is a small cake made especially for a baby’s first birthday. It’s designed for your little one to enjoy with their hands (and make a fun, messy memory!).

Can I make this banana smash cake ahead of time?
Yes! You can bake the cake layers one day ahead and store them covered in the refrigerator. Take them out and frost the cake with the whipped cream frosting right before serving.

The maple whipped cream frosting is best made the day before or the day of your baby’s first birthday celebration and stored in the refrigerator. If you make it ahead of time, you may need to give it a quick whisk before frosting the cake to help it become light and fluffy again.

What size cake pans should I use for a smash cake?
This recipe works well with two 6-inch cake pans for a smaller layered baby smash cake. You can also use two 4-inch pans for a thicker, taller smash cake.

Can I freeze the banana smash cake?
Yes! Freeze the unfrosted cake layers tightly wrapped. When you’re ready to serve, thaw the cake layers, add the whipped cream frosting, and enjoy.