Easy “Perfectly Imperfect” Birthday Cake

In this post, we are making a birthday cake!. I am so excited to share it with you. If you’ve been looking for a cake that basically tastes like a sunny cloud, this is it.

Why You’ll Love This

• Melt-in-Your-Mouth Texture: Thanks to the buttermilk and the creaming method, this cake has a super tender crumb that stays moist for days.
• Totally Versatile: While I’m making a layer cake today, you can easily use this batter for a sheet cake, a loaf of quick bread, or even cupcakes.
• Super Easy Frosting: We’re making a classic American buttercream that is whipped to blindingly white perfection—it’s the quickest and easiest way to frost a cake.

things we need

Special Equipment/Instruments:

• Stand mixer (with both whisk and paddle attachments) or electric hand mixer
• Digital kitchen scale (highly recommended)
• Two 8-inch round cake pans
• Parchment paper
• Cake strips (optional, for flat layers)
• Piping bag (optional)

Ingredients:

For the Cake Layers:

• 2 ⅔ cups (320g) All-purpose flour
• 2 ¼ tsp Baking powder
• ½ tsp Salt
• ¾ cup (170g) Unsalted butter, softened
• 1 ⅔ cups (333g) Granulated sugar
• 3 Large eggs, room temperature
• 1 tbsp Vanilla extract
• 1 cup (240ml) Buttermilk, room temperature
• ⅓ cup Rainbow sprinkles (optional, for funfetti style)

For the American Buttercream:

• 1 ¼ cups (284g) Unsalted butter, softened
• ¼ tsp Salt (omit if using salted butter)
• 5 cups (approx. 600g) Powdered sugar
• 5-6 tbsp Heavy cream
• 2 tsp Vanilla extract

The Secret to the Perfect Crumb

First things first: accuracy is key. I always say that using a scale will give you the best results. For this recipe, we want 320 grams of flour exactly.

If you just scoop your measuring cup into the bag, you’re going to pack it down, add too much flour, and end up with a dry, bready cake. If you don’t have a scale, make sure to fluff your flour first, sprinkle it into the cup, and level it off with a knife.

Why Buttermilk?
We are also using buttermilk here for a reason. Buttermilk is a weak acid, and whenever you add an acid in the correct amount to a cake, it tenderizes the gluten. This is exactly what gives you that lovely, melt-in-your-mouth experience.

Getting the Mix Right

For the cake batter, we start with a whisk attachment to really beat the butter and sugar together until it’s fluffy and cloud-like.

But here is the trick: once we add the flour and buttermilk, switch to the paddle attachment and mix on low. We do not want to overmix at this stage, or we lose that tender texture we worked so hard for.

Frosting and Decorating

This buttercream is all about air. The secret is to whip the butter for a full five minutes before you even think about adding the sugar. It transforms the yellow butter into a white, meringue-like consistency that is just luscious.

When it comes to the finish, remember: decorating should be fun! Don’t lose it over little imperfections. I love using a “sprinkle of sprinkles” on the top and the bottom—it’s the perfect way to hide any little mistakes and add some festive cheer.

Just like that, your birthday cake is ready to enjoy! Happy baking!

checkout more recipes

• Super Easy 3-Ingredient Oreo Fudge Recipe
• Small-Batch Chocolate Chip Cookies for Two
• Christmas Tree Brownies

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The Birthday Cake (Vanilla Funfetti)

Recipe by Sana ReiCourse: Dessert / CakeCuisine: AmericanDifficulty: Easy

Servings

12

slices

Prep time

30

minutes

Cooking time

35

minutes

Calories

650

kcal

Chill time

30

minutes

Total time

1

hour 

35

minutes

A melt-in-your-mouth vanilla layer cake packed with sprinkles and topped with a fluffy, white American buttercream. The crumb is tender, moist, and perfect for any celebration.

Ingredients

• Equipment Needed:

• Stand Mixer

• 2 x 8-inch Cake Pans

• Kitchen Scale

• Spatula

• Offset Spatula

• Ingredients:

• Cake Batter:

• u005c 320g (2 ⅔ cups) All-purpose flour

• u005c 2 ¼ tsp Baking powder

• u005c ½ tsp Salt

• u005c 170g (¾ cup) Unsalted butter, softened

• u005c 333g (1 ⅔ cups) Granulated sugar

• u005c 3 Large eggs

• u005c 1 tbsp Vanilla extract

• u005c 240ml (1 cup) Buttermilk

• u005c ⅓ cup Sprinkles

• Frosting:

• u005c 284g (1 ¼ cups) Unsalted butter, softened

• u005c ¼ tsp Salt

• u005c 5 cups Powdered sugar

• u005c 5 tbsp Heavy cream (plus more if needed)

• u005c 2 tsp Vanilla extract

Directions

• Prep the Oven and Pans: Preheat your oven to 350°F (175°C). Butter two 8-inch round cake pans and line the bottoms with parchment paper. Pro Tip: Use damp cake strips around the pans for perfectly flat layers.
• Whisk Dry Ingredients: In a large bowl, whisk together the flour (320g), baking powder, and salt. Set aside.
• Cream Butter and Sugar: In a stand mixer fitted with the whisk attachment, beat the softened butter (¾ cup) until smooth. Add the granulated sugar and beat on high for about 2 minutes until fluffy and cloud-like. Scrape the bowl down.
• Add Eggs: Reduce speed to medium. Add eggs one at a time, scraping the bowl down after each addition to ensure a cohesive mixture.
• Add Vanilla: Stir in the tablespoon of vanilla extract and mix on high for 1 minute.
• Mix Wet and Dry: Switch to the paddle attachment. Add about ⅓ of the flour mixture and mix on low until just combined. Add ½ of the buttermilk and mix. Repeat with another ⅓ flour, the remaining buttermilk, and finish with the last of the flour. Stop mixing when almost combined.
• Fold in Sprinkles: Remove the bowl from the mixer. Add the sprinkles and finish mixing by hand with a spatula, scraping the bottom of the bowl to ensure everything is incorporated without overmixing.
• Bake: Divide batter evenly between the two pans. Bake for 30–35 minutes, or until the centers are springy and a skewer comes out clean.
• Make the Frosting: While cakes cool, clean your mixer bowl. Add the frosting butter (1 ¼ cups) and salt. Beat on medium-high for 5 minutes until the butter is blindingly white and looks like meringue.
• 10. Finish Frosting: Reduce speed to low. Add powdered sugar one cup at a time, alternating with a tablespoon of heavy cream. Add vanilla. Increase speed to medium and whip for another minute until fluffy.
• 11. Assemble: Place one cooled cake layer on a stand. Spread a layer of frosting. Top with the second cake layer. Frost the top and sides. Decorate with piped dollops and extra sprinkles.
• 12. Set: Let the cake set in the fridge for a few minutes before slicing.

Notes

• Room Temperature Ingredients: Make sure your butter, eggs, and buttermilk are at room temperature. If you add cold liquids to butter, the batter can curdle.
• Don’t Overmix: Once the flour goes in, mix on low and finish by hand. Overmixing makes the cake tough rather than tender.
• Frosting Consistency: If your buttercream is too stiff, add a teaspoon more cream at a time. If it’s too soft, add a bit more powdered sugar.
• Storage: Keep the cake in the fridge if not serving immediately, but bring to room temperature before eating for the best texture.