1-Step 1: Prepare Your Equipment and Oven Preheat your oven to 350°F (177°C). Grease three 9-inch round cake pans thoroughly, then line them with parchment paper circles. This crucial step ensures your cakes will release easily after baking without sticking.

2-Step 2: Create the Cake Batter In a medium bowl, whisk together the dry ingredients: 3 and 2/3 cups (433g) cake flour, 1 teaspoon salt, 2 teaspoons baking powder, and 3/4 teaspoon baking soda. Set this mixture aside. In a large bowl or stand mixer, cream 1 and 1/2 cups (340g) room temperature unsalted butter with 1 and 2/3 cups (330g) granulated sugar until the mixture is light and fluffy. This process typically takes 3-5 minutes and incorporates air into the batter, resulting in a lighter cake texture. Add the wet ingredients one at a time: 3 large eggs plus 2 additional egg whites, beating well after each addition. Then mix in 1 tablespoon pure vanilla extract. Gradually add the dry ingredients to the butter mixture, alternating with 1 and 1/2 cups (360ml) room temperature buttermilk. Begin and end with the dry ingredients, mixing just until incorporated after each addition. Be careful not to overmix, as this can result in a dense cake.

3-Step 3: Create the Cinnamon Swirl In a separate bowl, combine 1/2 cup (100g) packed brown sugar, 1/3 cup flour, and 1 tablespoon ground cinnamon. Add 1/4 cup (56g) melted butter and mix until the mixture resembles wet sand.

4-Step 4: Assemble and Bake Divide the cake batter evenly among the prepared pans. Drop spoonfuls of the cinnamon swirl mixture over the batter in each pan. Use a knife to gently swirl the mixture into the batter, creating a marbled effect. Bake for 23 to 26 minutes, or until a toothpick inserted into the center of each cake comes out clean. Avoid opening the oven door frequently during baking, as this can cause the cakes to fall. Once baked, remove the cakes from the oven and let them cool in their pans for 10 minutes. Then, carefully transfer them to wire racks to cool completely. This step is crucial for preventing the cakes from breaking when you assemble them later.

5-Step 5: Prepare the Brown Sugar Cinnamon Buttercream While the cakes are cooling, prepare the frosting. In a large bowl or stand mixer, beat 1 and 1/4 cups (282g) unsalted butter until creamy and smooth. Add 8 ounces (226g) room temperature cream cheese and mix until well combined. Gradually add 3/4 cup (150g) packed brown sugar, 1 tablespoon ground cinnamon, and 5 and 1/2 cups (660g) confectioners’ sugar, mixing on low speed to avoid a sugar cloud. Pour in 1/4 cup (60ml) heavy cream or whole milk, along with 1 teaspoon vanilla extract and 1/8 teaspoon salt. Beat the frosting on medium-high speed for 3-5 minutes, until it’s light, fluffy, and smooth. Taste the frosting and adjust seasonings if needed you might want to add a pinch more salt, cinnamon, or vanilla depending on your preference.

6-Step 6: Assemble the Snickerdoodle Cake Once the cake layers are completely cool, it’s time to assemble our snickerdoodle cake recipe. Place one layer on your serving plate or cake stand and spread a generous layer of frosting over it. Add the second layer and repeat the process with more frosting. Place the final layer on top. Apply a thin layer of frosting over the entire cake this is called a crumb coat, which helps trap any loose crumbs. Chill the cake for 20-30 minutes to set the crumb coat. Then, apply the final layer of frosting, creating decorative patterns if desired. Garnish as you like with additional cinnamon sugar swirl, chopped nuts, or a sprinkle of cinnamon.