Delicious Walnut Cake with Buttercream for Your Celebration

There’s something truly special about celebrating with a homemade cake, and this walnut cake buttercream is perfect for marking any occasion. Moist, flavorful, and crowned with a luscious buttercream, it’s sure to impress your guests and delight your taste buds.

this Recipe

Whether it’s a birthday or just a reason to treat yourself, this recipe combines the rich nuttiness of walnuts with the silky sweetness of buttercream frosting. You’ll love making and sharing this classic dessert that feels both elegant and comforting.

Why You’ll Love This Recipe

• Rich and moist walnut cake with natural nutty flavors
• Smooth, creamy buttercream brings perfect sweetness
• Simple ingredients you likely have on hand
• Great for birthdays, celebrations, or any special moment
• Easy to customize with your favorite nuts or additions

Ingredients

Gather these ingredients to make the walnut cake and the buttercream frosting. Everything is straightforward and easy to find.

• 1 ¾ cups all-purpose flour
• 1 tsp baking soda
• ½ tsp salt
• ¾ cup unsalted butter, softened
• 1 cup granulated sugar
• 3 large eggs
• 1 tsp vanilla extract
• ½ cup sour cream
• 1 cup chopped walnuts, toasted
• For the Buttercream:
• 1 cup unsalted butter, softened
• 3-4 cups powdered sugar, sifted
• 2 tbsp heavy cream or milk
• 1 tsp vanilla extract
• Pinch of salt
• Additional chopped walnuts for garnish

Recipe Details

• Prep Time: 20 minutes
• Cook Time: 35 minutes
• Total Time: 55 minutes
• Servings: 8 slices
• Calories: Approximately 400 per serving

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1. Preheat your oven to 350°F (175°C) and grease an 8-inch round cake pan. Lightly flour the pan to prevent sticking.
2. In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
3. In a large bowl, cream the softened butter and sugar together until light and fluffy, about 3-4 minutes using a hand mixer or stand mixer.
4. Add the eggs one at a time, beating well after each addition, then stir in the vanilla extract.
5. Mix in the dry ingredients alternately with the sour cream, beginning and ending with the flour mixture. Fold in the toasted chopped walnuts gently.
6. Pour the batter into your prepared pan and smooth the top with a spatula. Bake for 33-35 minutes or until a toothpick inserted in the center comes out clean.
7. Allow the cake to cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.
8. While the cake cools, make the buttercream by beating the softened butter until creamy. Gradually add powdered sugar, one cup at a time, alternating with heavy cream and vanilla. Add a pinch of salt and beat until fluffy and spreadable.
9. Spread the buttercream evenly over the cooled cake and sprinkle additional chopped walnuts on top as garnish.

Tips for the Best Results

• Toast the walnuts before adding for enhanced flavor and crunch.
• Use room temperature ingredients for smoother batter and frosting.
• Don’t overmix the batter to keep the cake tender and moist.
• Adjust buttercream consistency by adding more cream for softness or powdered sugar for stiffness.
• Let the cake cool fully before frosting to prevent melting or sliding.

Storage and Reheating

Store your walnut cake buttercream covered in an airtight container in the refrigerator for up to 4 days. This keeps the frosting fresh and the cake moist.

If you want to freeze it, wrap tightly in plastic wrap and place in a freezer-safe container for up to 2 months. Thaw in the fridge overnight before serving. To refresh the cake, let it come to room temperature before enjoying.

Frequently Asked Questions

Can I substitute walnuts with other nuts?

Absolutely! Pecans or almonds work wonderfully as substitutes and bring their own unique flavors. Just toast them similarly for optimal taste.

Is sour cream necessary in the cake batter?

Sour cream adds moisture and a slight tang that balances the sweetness, but you can substitute with Greek yogurt if needed. Avoid skipping it to keep the texture nice.

How do I make the buttercream less sweet?

Try using a bit less powdered sugar or adding a teaspoon of cream cheese to the frosting for a tangy twist that cuts sweetness while maintaining creaminess.

Can this cake be made gluten-free?

Yes, swap the all-purpose flour with a gluten-free flour blend that measures like regular flour. Just check the blend includes xanthan gum for structure.