Easy Classic Vanilla Butter Cake with Buttermilk Sauce (Best Moist Southern Dessert)

Ingredients – Simple, Southern, Perfect

For the Vanilla Butter Cake:

• 2 cups (250g) all-purpose flour

• 1 teaspoon baking powder

• ½ teaspoon baking soda

• ¼ teaspoon salt

• 1 cup (2 sticks / 226g) unsalted butter, softened to room temperature

• 2 cups (400g) granulated sugar

• 4 large eggs, room temperature

• 1 cup (240ml) buttermilk, room temperature

• 2 teaspoons vanilla extract

For the Buttermilk Sauce:

• ½ cup (1 stick / 113g) unsalted butter

• 1 cup (200g) granulated sugar

• ½ cup (120ml) buttermilk

• 1 teaspoon vanilla extract

• ¼ teaspoon baking soda (this prevents curdling – don’t

  • skip!)

  Optional (For Serving):

  • Powdered sugar (for dusting)

  • Fresh berries (strawberries, blueberries, raspberries)

  • Whipped cream (lightly sweetened)

  Substitutions & Swaps:

  • No buttermilk? Make your own: add 1 tablespoon lemon juice or white vinegar to 1 cup milk. Let sit for 5-10 minutes until thickened.

  • No unsalted butter? Use salted butter, but reduce the salt in the recipe to a pinch.

  • Gluten-free: Use a 1:1 gluten-free flour blend with xanthan gum (King Arthur, Bob’s Red Mill). Add 2 tablespoons extra buttermilk.

  • Dairy-free: Use vegan butter and unsweetened almond milk + 1 tablespoon lemon juice (as buttermilk substitute). The texture will be slightly different but still delicious.

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  Step-by-Step – The Cake

  Step 1: Preheat and Prepare

  Preheat your oven to 325°F (160°C) . Grease a 10-inch Bundt pan, tube pan, or 9×13-inch baking dish with butter or nonstick spray. For a Bundt pan, dust with flour (or use Baker’s Joy).

  Pro tip:

  A Bundt pan gives you beautiful ridges for the sauce to pool in. But a 9×13 works beautifully too.

  Step 2: Whisk Dry Ingredients

  In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.

  Step 3: Cream the Butter and Sugar

  In a large mixing bowl (or stand mixer with paddle attachment), beat the softened butter on medium speed until creamy and smooth (about 1 minute). Add the granulated sugar and beat for another 2-3 minutes, until light, fluffy, and pale in color.

  Pro tip: Scrape down the sides of the bowl with a spatula. This ensures even mixing.

  Step 4: Add Eggs (One at a Time)

  Add the eggs one at a time, beating well after each addition. The mixture should look smooth and glossy. Add the vanilla extract and beat until combined.