Our family loves this recipe for easy white cake! The vanilla cake turns out so moist and flavorful, gets tons of compliments each time I make it, plus no one knows it’s a box cake mix recipe! Learn our tips for how to make a box cake taste homemade.
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1boxwhite cake mix15.25 oz (I prefer Duncan Hines)
1cupall purpose flour
1tspvanilla extractclear or regular
2sticksunsalted butter, room temperature1 cup
1tbspmilkif frosting becomes too thick
Preheat the oven to 350º F.
In a large mixing bowl combine the cake mix, sugar, flour, salt, egg whites, vanilla extract, milk, buttermilk, and sour cream, beat with an electric mixer until combined, 1-2 minutes.
Spray a 9x13 inch pan with non-stick cooking spray. Pour the batter into the pan and bake for 37-43 minutes or until a toothpick inserted in the center of the cake comes out clean. Allow the cake to cool completely before adding frosting.
In a mixing bowl, combine the butter and vanilla extract, beat using an electric mixer until fluffy. Begin to add the powdered sugar, about 1 cup at a time, mixing by hand. Continue adding powdered sugar until the frosting no longer looks wet and tastes good to you. Then I use my electric mixer one last time to make sure the powdered sugar is really incorporated and ready to go. If the frosting becomes too thick, add a dash of milk.
Spread the frosting on top of the cooled cake, add sprinkles if desired.