Heavenly Layer Cake

A Heavenly Layer Cake is a tender, moist vanilla cake with a silky frosting, split into two layers and stacked with frosting between them. The secret is room-temperature ingredients and careful mixing that keeps the crumb soft instead of dense.

Ingredients for Heavenly Layer Cake

All-purpose flour gives the cake structure without making it tough. Baking powder and baking soda work together to lift the batter evenly as it bakes. Salt strengthens the flour and balances sweetness. Butter and granulated sugar creamed together trap air that makes the cake light and fluffy. Eggs add moisture and bind everything. Vanilla extract deepens the flavor without tasting artificial. Sour cream keeps the crumb tender and adds a subtle tang. Whole milk thins the batter so it bakes evenly. For the frosting, butter whipped with powdered sugar and heavy cream becomes smooth and spreadable, while vanilla extract and salt round out the taste.

Why This Heavenly Layer Cake Works

Creaming cold butter with sugar incorporates air into the batter, which expands in the heat and gives the cake its light texture. When you add the dry ingredients and dairy in alternating batches, the flour hydrates gently without overworking the gluten, which would make the crumb tight and rubbery.

The combination of baking powder and baking soda ensures the cake rises quickly and evenly, and sour cream in the batter adds moisture so the cake stays soft for days. Baking in a moderate oven at 350°F (175°C) lets the cake bake through without browning the edges too fast.

Once cooled completely, the cake can be split into two layers without crumbling. The frosting is soft enough to spread smoothly but stable enough to hold the layers apart.

Mistakes To Avoid

Cold butter and eggs won’t cream together, leaving lumps in the batter and a dense, uneven cake. The crumb will be grainy instead of tender, and the cake may not rise fully.

Overmixing the batter after you add the flour overdevelops the gluten, making the cake tough and compact. Mix only until the flour disappears, about 30 seconds per addition, and stop as soon as you see no dry streaks.

Overbaking by even a few minutes dries out the cake, leaving it crumbly and hard. Check it at 33 minutes and look for a toothpick inserted in the center that comes out with just a few moist crumbs.

Frosting a warm cake melts the frosting and makes it run off the sides. Cool the cake completely in the pan, then turn it out onto a wire rack for at least an hour before splitting and frosting.

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Ingredients

• 2 1/4 cups (281 grams) all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 cup (113 grams) unsalted butter, at room temperature
• 1 1/2 cups (300 grams) granulated sugar
• 2 large eggs, at room temperature
• 2 teaspoons vanilla extract
• 1/2 cup sour cream, at room temperature
• 1/2 cup whole milk
• 1 cup (226 grams) unsalted butter, at room temperature, for frosting
• 3 cups (360 grams) powdered sugar
• 3 tablespoons heavy cream
• 2 teaspoons vanilla extract
• 1/4 teaspoon salt

Step-by-step Instructions

1. Preheat the oven to 350°F (175°C). Grease a 9-inch round cake pan and line the bottom with parchment paper.
2. Whisk together the flour, baking powder, baking soda, and salt in a medium bowl.
3. In a large bowl, beat the butter and granulated sugar on medium-high speed for 3 to 4 minutes until light and fluffy, scraping the bowl once.
4. Add the eggs one at a time, beating on medium speed for 30 seconds after each addition, then add the vanilla extract and beat for 15 seconds.
5. Add one-third of the flour mixture on low speed and mix for 30 seconds until just combined. Add half the sour cream and mix for 20 seconds. Add half the remaining flour mixture and mix for 30 seconds. Add the remaining sour cream and milk and mix for 20 seconds. Add the remaining flour mixture and mix for 30 seconds until no dry streaks remain.
6. Pour the batter into the prepared pan and smooth the top with a spatula. Bake at 350°F (175°C) for 33 to 35 minutes until a toothpick inserted in the center comes out with just a few moist crumbs and the top springs back when lightly touched.
7. Cool the cake in the pan on a wire rack for 15 minutes, then turn it out onto the rack and cool completely, at least 1 hour.
8. Once cooled, place the cake on a cutting board. Using a long serrated knife, gently saw horizontally through the cake, rotating the pan as you go, until you have two even layers.
9. For the frosting, beat the butter on medium-high speed for 2 minutes until pale and creamy. Add the powdered sugar one cup at a time, beating on low speed after each addition for 20 seconds. After all the sugar is in, add the heavy cream, vanilla extract, and salt, and beat on medium speed for 1 to 2 minutes until smooth and fluffy.
10. Place the bottom layer on a cake plate and spread a thin layer of frosting on top, about 1/2 inch thick. Set the second layer on top and spread the remaining frosting over the top and sides of the cake.