Cream the butter and sugar
Add the softened butter and granulated sugar to a large mixing bowl. Using a stand mixer or hand mixer, beat on medium speed until the mixture is light and fluffy, 3–5 minutes. This creaming step traps air in the batter and is key for a beautifully tender pound cake.
Add the eggs one at a time
Beat in the eggs, one at a time, mixing well after each addition and scraping down the sides of the bowl as needed. This helps create a smooth, emulsified batter and keeps it from looking curdled.
Blend in the vanilla and sour cream
Mix in the vanilla extract, then add the full-fat sour cream. Beat on low to medium-low speed just until everything is combined. The batter should look creamy and luxurious—this is where that moist sour cream pound cake magic begins.
Whisk together dry ingredients
In a separate bowl, whisk the flour, baking powder, and salt until well combined. This distributes the leavening evenly so you don’t get pockets of baking powder.
Alternate dry ingredients with sour cream mixture (if using extra)
With the mixer on low, gently add the dry ingredients in two or three additions, mixing just until the flour disappears each time. Avoid overmixing the batter—once you see no streaks of flour, stop. Overmixing can make the cake tough instead of tender.