Easy Sour Cream Cake with Creamy Chocolate Frosting

Easy Sour Cream Cake with Creamy Chocolate Frosting is over the top simple and my family’s most favorite.

Yes, yes, this cake starts with a short cut. I used a cake mix here…sue me.

My grandma used to make this cake, your grandma probably made this cake… it’s a whole thing in the world. I generally do love a completely from “scratch” recipe, but sometimes the magic cake mix fairies sprinkle their love dust on my brain and convince me to pull a little semi-homemade action.


When fairies come-a-calling…you know how it goes…

If the weekend had an official cake, you’re looking at it. Plus, let me just say that creamy chocolate frosting on top is super legit.

The easiest and creamirst chocolate frosting ever! I use it to top my Simple Sour Cream Cake!

You basically doctor up a cake mix with a little sour cream, an extra egg, an eensy bit more sugar…

It gives it a slightly denser texture, but totally soft.

Sour Cream Cake batter

It bakes up like perfection. I almost always make this in a 9×13 pan, because when I’m short-cutting and using a cake mix I’m generally looking for simple decorating too.

But for all you over achievers out there this cake is 100% perfect for baking in 8- inch round pans and layering!

The easiest and softest sour cream cake!

The secret to this chocolate frosting is evaporated milk. It makes the frosting SO creamy.

The creamiest chocolate frosting ever!

Just spread it all over your cooled cake…

Gorgeous and stunning and beautiful and pretty and sexy and on fleek and cute and attractive and foxy and hot and…and…and…

This is the easiest and softest sour cream cake ever. My family asks for it again and again and the chocolate frosting is easily the creamiest I ever had!

…simple, delicious and no fuss.

Shouldn’t all cake be like this?

Easy Sour Cream Cake with Creamy Chocolate Frosting

  • Author: Cookies & Cups
  • Yield: serves 12



  • 1 (15.25- ounce) yellow cake mix
  • 4 eggs
  • 1 cup sour cream
  • 1/4 cup water
  • 1/3 cup vegetable oil
  • 1/4 cup granulated sugar
  • 1 teaspoon vanilla

Chocolate Frosting

  • 6 tablespoons butter, room temperature
  • 1/3 cup cocoa powder
  • 3 cups powdered sugar
  • 1 teaspoon vanilla
  • 1/3 cup evaporated milk



  1. Preheat oven to 350°F. Coat a 9×13 pan with nonstick spray and set aside.
  2. In the bowl of your stand mixer fitted with the paddle attachment mix all the cake ingredients together on low speed for 30 seconds. Turn the speed up to medium and mix for 2 minutes, scraping the sides as necessary.
  3. Pour the batter into the prepared pan and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
  4. Allow the cake to cool completely.


  1. In the bowl of your stand mixer mix the butter until smooth. Add in the cocoa powder, powdered sugar, vanilla and evaporated milk. Mix on low for 30 seconds and then turn the speed up to medium and mix for 1-2 minutes until it’s creamy and smooth.
  2. Spread the frosting on the cooled cake.