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This Doctored Up White Cake Mix starts with a simple boxed mix, then gets a few easy upgrades for a cake that is soft, moist, and bakery-worthy! It’s got a rich buttery flavor, making it the foolproof dessert recipe everyone will think you made completely from scratch!
Why You’ll Love THIS Doctored Up White Cake Mix Recipe
- Perfectly moist and tender! It’s so flavorful (thanks to the melted butter and vanilla!) and the texture is perfect! It’s moist, smooth, and velvety with enough structure to hold together beautifully while staying incredibly tender.
- Versatile! Feel free to use this recipe for white cake mix, Funfetti Cake mix, and lemon cake mix, too!
- Used for Many Applications! Though the recipe card describes a 9×13-inch cake, there are other options in the notes below! Need a layer cake? Go for it. Want cupcakes? Go right ahead!
- It’s been well-tested by a food scientist – Wait til you hear how many times I tested this below…
Notes About the Ingredients
White Cake Mix – I tried this with several brands of white cake mix including Betty Crocker, Pillsbury, Great Value, and the Aldi brand. They all worked great with this recipe! You’ll notice that some are slightly smaller (the Betty Crocker mix was 14.25 ounces) and worked just fine.
Butter – I prefer to use salted butter in this recipe. Be sure to melt it and give it some time to cool before adding to the batter.
Milk and Sour Cream – I recommend letting these set out at room temperature for an hour before mixing up the batter. You want them to be at room temperature before mixing up the batter. Whole milk and full fat sour cream are the best options, but skim, 1%, or 2% milk will work fine, too.
Egg Whites – You can use either 4 egg whites or 3 whole eggs for this recipe. If you choose to use whole eggs, the batter has a little more fat and can be slightly more moist, though it won’t be pure white like if you used just the whites. Be sure to bring the egg whites to room temperature before adding them.
Vanilla Extract – I typically just use standard vanilla extract, but if you are wanting a pure white cake, you can use clear vanilla extract instead!
How to Make the Best Doctored Up Cake Mix
There are a few things you need to do before mixing up the batter to ensure the best cake!
- Make sure all ingredients are room temperature. This allows the ingredients to incorporate more easily as a batter and bake up beautifully!
- Prepare the pan(s). If you’re using a 9×13-inch pan, you can just grease the pan with cooking spray. If you plan to do a layered cake (where you need to easily remove the cake from the pan), be sure to line the pans with parchment paper rounds. You can buy them or make your own.
- Preheat the oven. It’s important that the oven is hot when you add the cake batter. It helps the cake bake evenly and rise properly.
To mix the batter, you’ll begin by stirring together the dry ingredients. Then, add all of the (room temperature) wet ingredients.
I like to use a whisk to ensure that the clumps from the box mix are broken up and so all of the ingredients are well-incorporated.
Pour the batter into he prepared pan and spread it to an even layer with a rubber spatula.
The bake time will depend on the size pan you’re using. Please see the table below. I always recommend starting with the lowest amount of time and checking the cake to see if it needs more time. You know it’s done when a toothpick inserted into the center of the cake comes out clean or with a few moist crumbs.
| Pan Size | Approx. Bake Time (at 325F) |
| One 9×13-inch Pan | 28-32 minutes |
| Two Round 8-inch Pans | 24-28 minutes |
| Two Round 9-inch Pans | 20-24 minutes |
| Three Round 6-inch Pans | 18-22 minutes |
| Cupcakes (Bake 1 Pan at a Time) | 12-15 minutes |
Finishing the White Cake
There are SO many options when it comes to topping and decorating a white cake! No matter what you plan to top it with, however, be sure to let it cool completely first. Here are some ideas!
- Keep it Classic! Pair the white cake with vanilla buttercream and top with sprinkles!
- Make it Berry Fresh! Make 2-3 layers and add some fresh berries along with the frosting in between layers and on top! Perfect for summer.
- Give it a Coconut Flair! Add 1 – 1 1/2 teaspoons of coconut extract to the cake (skip the almond extract) then cover the outside and top of the cake with toasted coconut!
- Try Something New! Skip the classic buttercream and opt for a whipped cream frosting, strawberry frosting, or a white chocolate ganache!
Storing a White Cake
If you plan to frost the cake as soon as it cools, that’s great. Depending on the type of frosting used, you’ll want to either cover it and leave it at room temperature or refrigerate until ready to enjoy. I find this cake to have the best texture at room temperature, so be sure to let is set out for 30-45 minutes before serving.
If you don’t plan to frost the cake right away, be sure to cover it once it’s cool. You can also freeze the cake for 1-2 months; just be sure it’s either in an airtight container or wrapped tightly.
When to Use a Doctored Up Cake vs. a Standard Cake Mix
This cake is excellent for a cake with buttercream or any layered cake you’re making as the moist, tighter crumb can hold up structurally. However, following the instructions on a cake mix box can result in a very light (almost crumbly) cake that is great for things such as a jello poke cake to soak in all that goodness!
Why is my cake dense or dry?
Though this cake is pretty straight-forward, there are a few reasons this could happen.
- It’s possible the ingredients hadn’t come to room temperature before you mixed up the batter or the ingredients weren’t fully incorporated.
- You may have over-baked the cake as this will result in a dry cake.
- You added too much flour by packing the measuring cup. Instead, be sure to use a spoon to sprinkle the flour into the measuring cup so it isn’t packed in there (too much flour can lead to a dry cake).
- You left the cake setting out too long before covering it with a lid, plastic wrap or frosting. Be sure to cover the cake once it’s cooled off so you don’t have moisture evaporating from the cake.
Other Cake Recipes To Try
Doctored Up White Cake Mix
Equipment
- 1 9×13-inch baking pan
Ingredients
- 1 15.25-ounce box white cake mix (14.25 oz is fine, too)
- 1 cup flour
- 1 cup sugar
- 1 cup sour cream
- 1 cup milk
- 4 egg whites or 3 whole eggs
- 1/2 cup butter melted and cooled slightly
- 1 teaspoon vanilla extract
- 1 teaspoon almond extract optional
Instructions
- Preheat oven to 325℉ and grease a 9×13-inch pan. See notes below if making a layered cake.
- In the bowl of a stand mixer (or in a large bowl), combine the cake mix, flour, and sugar.1 15.25-ounce box white cake mix, 1 cup flour, 1 cup sugar
- Add the sour cream, milk, egg whites, melted butter, vanilla extract, and almond extract (if using).1 cup sour cream, 1 cup milk, 4 egg whites, 1/2 cup butter, 1 teaspoon vanilla extract, 1 teaspoon almond extract
- Beat for 1 minute, scraping down the sides of the bowl half-way through.
- Pour into your prepared pan and spread to an even layer.
- Bake for 28-32 minutes or until a toothpick poked into the middle of the cake comes out clean.
- Let the cake cool completely before frosting.
