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Theo’s Car Wash Birthday Cake

September 14, 2024 · In: Featured, Tutorials

I’ve decided to be the kind of mom who makes whatever my kids want when it comes to their birthday cakes, no matter how silly or random. So when my son Theo asked for a car wash cake for his birthday, I had to find a way to make it happen. He has been obsessed with the car wash for probably half of his life, so I knew this wasn’t just a flippant request. Here’s how I pulled it off in case you ever get a car wash cake request. 

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car wash birthday cake
carwash cake by sugar and sparrow

For the ribbon scrubber: I built a simple frame using wooden skewers and a popsicle stick that I glued together with a hot glue gun. Then, I used a pasta cutter to cut the ribbons out of gum paste. I chose gum paste because it dries much more firmly than fondant* and I wanted the best stability (we had to drive the cake somewhere). I draped the ribbons over the wooden frame and let the whole thing dry for a few days before using it as a cake topper. 

*Fondant would work as well, just note that it takes longer to dry and might be softer/more breakable. 

car wash birthday cake
car wash cake for kid birthday

For the spinner scrubbers: I stuck a piece of Australian licorice onto a wooden skewer, then used Wilton Tip 233 to pipe shag buttercream onto it, starting at the bottom of the licorice and working my way to the top. 

For the car: I bought a Hot Wheels car from Target. 

For the soap suds: I used Wilton Tip 5 and Tip 2 to pipe different sized bubbles all over the cake. 

Additional decorations: I accented the car wash design with SprinklePop Rainbow Road sprinkles, which are so pretty and celebratory! And then I added these candles by Meri Meri to make it a party cake. 

carwash birthday cake

You can watch a video of me making this cake on Instagram to see how it all came together. I absolutely love how it turned out and can’t wait to see what next year’s birthday cake request will be!

By: Whitney · In: Featured, Tutorials

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Comments

  1. Amy Kamber says

    August 27, 2025 at 6:34 pm

    Thank you for sharing this – I used it as inspiration to make a car wash cake for my son with special needs who loves going to the car wash!

    Reply
    • Whitney says

      August 27, 2025 at 8:21 pm

      That’s awesome, Amy! I hope he loves his cake!!

      Reply

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LEMON CUPCAKES 🍋 after about a dozen recipe tes LEMON CUPCAKES 🍋 after about a dozen recipe tests, this one is everything I could want in a lemon cupcake! Fluffy-yet-moist, bursting with natural lemon flavor, and absolutely irresistible topped with lemon cream cheese buttercream. 

Full recipe (with frosting) linked in my bio + at https://sugarandsparrow.com/homemade-lemon-cupcakes/

INGREDIENTS:
1 Cup (132g) all-purpose flour
1 tsp baking powder
1/4 tsp salt
1/4 Cup (60ml) whole milk, room temperature
3 Tbsp (45ml) lemon juice from 1 medium lemon
3/4 Cup (150g) granulated sugar
3 Tbsp (42g) unsalted butter, room temperature
2 Tbsp (30ml) vegetable oil
2 large eggs, room temperature
1 tsp pure vanilla extract

INSTRUCTIONS:
1. Preheat the oven to 350ºF (177ºF) and line a standard cupcake pan with 12 paper liners.
2. In a large bowl, whisk together the flour, baking powder, and salt. Set aside. 
3. In the bowl of a stand mixer fitted with the paddle attachment (or with a hand mixer and large bowl), add the lemon zest to the sugar and mix on low speed until fragrant and well combined, about 1 minute. Meanwhile, combine the lemon juice with the milk and set aside. 
4. Add the butter to the lemon-sugar mixture and cream on medium speed until and combined, about 2 minutes. Add the vegetable oil and beat until light and creamy, about 3 minutes. Scrape down the bowl and paddle as needed.
5. Mix in the eggs one at a time on low speed, then add the vanilla and turn the mixer to medium speed for one minute.
6. Turn the mixer off and add the flour mixture all at once. Mix on low speed until just combined, then slowly pour in the lemon-milk mixture. Mix until just combined, about 30 seconds.
7. Divide the batter equally between the liners and bake for 14-18 min. Cool, then top with frosting of your choice (link in bio for lemon cream cheese frosting)�
#lemoncupcakes #creamcheesefrosting #lemon #cupcakes #cupcakedecorating
April in my kitchen 🌸 I published 5 NEW recipes April in my kitchen 🌸 I published 5 NEW recipes on my site, baked my Oreo cupcake recipe for a fundraiser and found it was just as delicious as I remember, and filmed/photographed 3 recipes that will be on my blog in May (Lemon Cupcakes, Lemon Cream Cheese Buttercream, and No-Bake Marbled Strawberry Cheesecake) 🥰 

Comment “APRIL” to get all the available recipes and stay tuned for more! 

#bakersofinstagram #springbaking #cakedecorating #cupcakes #bakinglove
SHEET PAN COOKIE CAKE 🍪 slice it warm for a fud SHEET PAN COOKIE CAKE 🍪 slice it warm for a fudgy chocolate chip cookie OR let it settle into a moist and chewy cookie cake that’s perfect for decorating! My fave vanilla buttercream + sprinkles turn this giant chocolate chip cookie into the perfect birthday cake alternative at the end 🥳
⁣
Full recipe + decorating ideas at https://sugarandsparrow.com/sheet-pan-chocolate-chip-cookie-cake/
⁣
INGREDIENTS⁣
1 Cup (226g) unsalted butter, melted⁣
1 1/3 Cups (267g) packed light or dark brown sugar⁣
1/2 Cup (100g) granulated sugar⁣
3 large eggs⁣
1 Tbsp pure vanilla extract⁣
1 tsp baking soda⁣
1 tsp cornstarch⁣
1/2 tsp salt⁣
3 Cups (398g) all purpose flour⁣
2 Cups (350g) semi-sweet chocolate chips⁣
⁣
INSTRUCTIONS⁣
1. Preheat the oven to 350ºF (177ºC). Grease and line a 13×18 inch sheet pan.⁣
2. In a large bowl, add the brown sugar and granulated sugar. Melt the butter in the microwave and pour it over the top of the sugars. Whisk together until uniform. Add the eggs and vanilla, then continue whisking until uniform. Whisk in the baking soda, cornstarch, and salt.⁣
3. Add the flour and use a silicone spatula to fold it in until smooth cookie dough forms. Reserve 1/2 Cup of the chocolate chips and set them aside, then fold the remaining 1 1/2 Cups of chocolate chips into the cookie dough.⁣
4. Place the chocolate chip cookie dough onto the prepared sheet pan and use an offset spatula to spread it all the way to the edges in an even layer.⁣
5. Bake the cookie cake for 14-16 minutes, until it looks golden brown on the edges and set. 
6. Enjoy warm or let it cool and decorate with vanilla buttercream and sprinkles! ⁣
⁣
#cookiecake #chocolatechipcookies #sheetcake #birthdaycake #cakedecorating
STRAWBERRY CUPCAKES 🍓based on my beloved strawb STRAWBERRY CUPCAKES 🍓based on my beloved strawberry layer cake recipe, this cupcake version is just as moist yet fluffy and bursting with natural strawberry flavor! Between the mix of fresh strawberries in the cupcakes + freeze-dried strawberries in the frosting, the flavor is out of this world 🚀

Full recipe link in my bio (with strawberry buttercream) + at https://sugarandsparrow.com/strawberry-cupcakes/

STRAWBERRY CUPCAKES
Yield: 14 cupcakes

INGREDIENTS:
5 oz (143g) fresh or frozen strawberries
1/3 Cup (80ml) whole milk, room temp
1 1/2 Cups (158g) sifted cake flour
1 tsp baking powder
1/4 tsp baking soda
1/2 tsp salt
6 Tbsp (85g) unsalted butter, room temp
1 Cup (200g) granulated sugar
2 large eggs, room temp
3 Tbsp (45g) sour cream, room temp
1 tsp vanilla extract
1 drop pink food coloring (optional)

INSTRUCTIONS: 
1. Puree the strawberries using a food processor (you’ll have about 1/2 cup of puree), then place into a saucepan over medium-low heat. Bring to a simmer, then cook for 10-15 min, stirring occasionally, until you have 1/4 cup. Refrigerate until room temp.
2. Preheat oven to 350ºF (177ºC) and line a standard cupcake pan with liners.
3. Whisk together the sifted cake flour, baking powder, baking soda, and salt and set aside.
4. In a stand mixer w/ paddle attachment (or hand mixer + large bowl), whip the butter on high for 2 min. Add sugar and beat for 2 min, until light and fluffy. Turn the mixer to low and add the eggs one at a time, then add the vanilla and sour cream, turn the mixer to high and beat for 1 min. Meanwhile, whisk together the strawberry puree, whole milk, and food coloring (if using).
5. Turn the mixer off and add all of the dry ingredients at once. Mix on low until just combined, then add the strawberry milk mixture until just combined, about 30 seconds.
6. Fill the cupcake liners 2/3 full and bake for 14-18 minutes. Cool completely before topping with strawberry buttercream (full recipe linked above). 

#strawberrycupcakes #strawberrycake #pinkcupcakes #strawberry #cupcakes
COFFEE BUTTERCREAM (recipe below)☕️ this frost COFFEE BUTTERCREAM (recipe below)☕️ this frosting has AMAZING coffee flavor, is so easy to decorate cakes with, and pairs beautifully with so many flavors (chocolate, vanilla, or any cake flavor you’d want to turn into a latte). 

All my cake pairing suggestions are linked in my bio or at https://sugarandsparrow.com/coffee-buttercream-recipe/ 

COFFEE BUTTERCREAM⁣
Yield: 2.5 Cups⁣

INGREDIENTS⁣
1 1/2 tsp instant coffee or espresso powder⁣
1 1/2 Tbsp whole milk, room temperature⁣
1 Cup (226g) unsalted butter, room temperature⁣
3 1/2 Cups (420g) powdered sugar⁣
2 tsp pure vanilla extract⁣
Pinch of salt⁣

INSTRUCTIONS⁣
1. Combine the instant espresso/coffee with the whole milk and set aside. In the bowl of a stand mixer, beat the butter on high until creamy and smooth (about 5 minutes), scraping down the bowl and paddle a few times in between.⁣
2. Turn the mixer to low and add the powdered sugar a few cups at a time, scraping down the bowl and paddle between intervals. Add the vanilla, the coffee/espresso milk mixture, and salt. Mix on low until fully incorporated, about one minute.⁣

#coffeebuttercream #buttercream #frosting #coffeecake

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