Can I use homemade buttermilk for this Cookies and Cream Birthday Cake?

While homemade buttermilk works well in many recipes, store-bought buttermilk is much thicker and is highly recommended here. Because this cake relies on a high ratio of liquid to maintain its moisture, a thinner homemade substitute can alter the structure. If you must use a homemade version, reduce the amount of liquid to 1 1/4 cups (275 g) to keep the batter balanced.

How should I store this cake to keep it moist?

Store your decorated cake under a glass cake dome or in an airtight container at room temperature for up to three days. If your kitchen is particularly warm, you can keep it in the refrigerator, but let it sit on the counter for thirty minutes before serving. This allows the traditional butter in the frosting to soften back to its proper, silky consistency.

Why did my cookie chunks sink to the bottom of the cake?

Cookie chunks usually sink if they are chopped too large or if the cake batter is overmixed and becomes too thin. Ensure you chop your cookies into small, rustic pieces rather than large halves, and fold them in very gently at the very end. The thick, buttermilk-based batter should hold them in place perfectly when prepared correctly.

Can I freeze the cake layers before assembling?

Yes, you can easily freeze the baked layers to save time before your big celebration. Once the layers have cooled completely on your wire rack, wrap each one tightly in two layers of plastic wrap and store them in the freezer for up to one month. Thaw the wrapped layers overnight in the refrigerator before frosting your Cookies and Cream Birthday Cake.

What can I use instead of canola oil in the batter?

Any neutral, unflavored vegetable oil will work beautifully in this recipe, such as safflower or sunflower oil. Avoid using olive oil or coconut oil, as their strong flavors will overpower the delicate vanilla notes of the cake. The oil is essential for keeping the crumb tender, so do not substitute it entirely with extra butter.

How do I get clean slices when cutting this cake?

To get neat, beautiful slices that showcase the layers, use a long, sharp chef's knife. Dip the blade into a tall jar of hot water, wipe it clean with a dry kitchen towel, and make your first slice. Wipe the blade clean and dip it in the hot water again before every single cut to keep the buttercream from smudging.

Cookies And Cream Birthday Cake: Layer Cake Exceptionnel

Description

This nostalgic Cookies and Cream Birthday Cake features soft, vanilla-kissed layers studded with crunchy chocolate sandwich cookies. It is finished with a silky-smooth buttercream that provides the perfect balance of richness and childhood charm.

Ingredients

2⅓ cups (300 g) all-purpose flour
¼ cup (25 g) cornstarch
½ teaspoon baking soda
1 teaspoon baking powder
½ teaspoon salt
½ cup (113 g) unsalted butter, softened
½ cup (105 g) vegetable oil
1⅔ cups (332 g) granulated sugar
3 large eggs, room temperature
1¼ tablespoons vanilla extract
1 teaspoon white vinegar
1½ cups (112 g) buttermilk, divided
28 chocolate sandwich cookies, divided
1½ cups (340 g) unsalted butter, softened
2¾ cups (350 g) icing sugar
1½ teaspoons vanilla extract
1½ tablespoons milk

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Instructions

Prep and preheat. Preheat oven to 160°C (320°F) and grease and line two 8-inch cake tins with parchment paper.
Sift dry ingredients. Whisk together the flour, cornstarch, baking soda, baking powder, and salt in a bowl and set aside.
Cream butter base. Beat the butter, oil, and granulated sugar with an electric mixer for two minutes until pale and creamy.
Add eggs and aromatics. Incorporate eggs one at a time, then mix in the vanilla, vinegar, and half the buttermilk.
Combine the batter. Fold in the dry ingredients and remaining buttermilk alternately by hand, then fold in 14 chopped cookies.
Bake the layers. Divide batter into tins and bake for 33 minutes or until a toothpick comes out clean; cool on a wire rack.
Prepare and frost. Whip the buttercream ingredients until fluffy, fold in 14 crushed cookies, and assemble the cooled cake layers.

Notes

Weigh your flour using a digital scale to ensure the cake crumb remains light and tender.
Use room temperature ingredients for the buttercream to prevent the butter from curdling or separating.
Chop the cookies by hand to maintain larger chunks that provide a better texture than processed crumbs.
Assemble the cake once the layers are completely cool to ensure the frosting remains stable and smooth.

Prep Time: 15 mins
Cook Time: 35 mins
Category: Dessert
Method: Baking
Cuisine: American