Take your box cake mix to the next level with this easy recipe! A few simple additions make it extra moist and delicious.
Alright, *almost* scratch cake is a bit of a stretch. It’s mostly a box cake with stuff added in to make it even better.
Some bakers scoff at box mixes, think it’s sacrilege and only bake from scratch. I’m a whatever-works-for-you kinda baker and sometimes it’s just easier to whip out a box.
How to Make Box Cake Better
Adding a few simple ingredients makes a world of difference. Trust me you will never go back to a plain old box cake mix ever again!
Here’s what you’ll need:
box cake mix
all-purpose flour
sugar
salt
large eggs
water (or milk)
vegetable oil
vanilla
sour cream
The sour cream is the secret ingredient I think that makes this doctored box mix extra moist and flavourful.
I recommend using full-fat sour cream because really, we’re not about saving calories at this point, right?
Boxed Cake Mix Recipe
Making this cake is just as simple as any box mix, just with a couple of other ingredients. To make it all you need to do is:
whisk the dry ingredients together
add the wet ingredients
mix on low until combined
This recipe works great for two 8″ cake pans or three 6″ pans. It can be scaled up for larger pans though too. I use this site as a guideline when I’m scaling recipes up or down.
I like to use Homemade Cake Release on my pans and line them with parchment to make sure the cakes come out perfect every time.
I also use Baking Strips around the sides of my cake pans to make sure the cakes bake perfectly flat and don’t require any trimming (no wasted cake scraps!).
If you’d like to make your cake extra moist (or if you’re worried you’ve over baked it) you can add some Simple Syrup to the cooled cake layers. I recommend trimming a bit of the top crust first so the syrup really soaks into the cakes.
These days I mostly bake from scratch, but I used to use this recipe all the time when I was focussing on cake decorating. It bakes up a very sturdy and delicious cake!
I’ve yet to recreate the delicious flavour and texture of a classic vanilla box mix cake though. My Vanilla Cake recipe comes close, but it’s not quite the same. It is delicious though too, so you should try it if you haven’t!
I really like this recipe because it makes the box mixes a little more dense and super moist. This recipe is GREAT for a cake that will be decorated, stacked, etc. as the cakes have really good structural integrity.
This recipe makes two 8″ or three 6″ cake pans. You can use two 9″ as well but the layers will be thinner (reduce baking time accordingly).
To make cupcakes, all you need to do is reduce the baking time. Start checking at 15mins or so. The recipe should make about 24 cupcakes depending on size.
You can bake it in a 9×13 pan. Baking time will be slightly shorter.
You can bake it in a Bundt pan as well but you’ll need to increase the baking time.
For all other conversions, I use this site as a guideline.
Baking time will vary if you change the pan size. Every oven varies so I can’t say for certain what you’ll need to adjust it to. Be sure to check on the cake as it’s baking.
Will This Work With Any Box Cake Mix?
I’ve only used this method with yellow/white cake mixes, but it should work just fine with any kind of box mix.
For chocolate cake mixes, instead of adding 1 cup flour, you can add 3/4 cup flour and 1/4 cup cocoa powder if you like.
For a pure white cake, use a white cake mix and 5 egg whites in place of 3 whole eggs.
For box mixes, my go-to’s are Betty Crocker and Duncan Hines. The French Vanilla flavour is my favourite.
You can easily add some sprinkles to make this a funfetti cake instead, but be sure to use either jimmies or confetti as the small round nonpareils will bleed into the batter.
Other Tips for making this Doctored Cake Mix:
Do not also use the ingredients listed on the back of the box mix. Only the components in the recipe.
Be sure to use room temperature ingredients as this will yield the best results.
Use full-fat sour cream for best results. Yogurt is a good substitute as well.
Learn how to keep your cakes moist using Simple Syrup.
To help ensure your cake layers bake up nice and flat, check out my Flat Top Cakes post!
Add wet ingredients and mix until combined. I use my KitchenAid on low for 2 minutes but you can also do this by hand.
Divide the batter between the pans and bake for approximately 50 minutes.
Cool in pans on wire rack for 10mins, then turn cakes out onto wire racks to cool completely.
Notes
*I use French Vanilla, but you can use any yellow/white cake mix for this. I haven't tried with other kinds, but I imagine it would yield similar, delicious results.
The nutritional information and metric conversions are calculated automatically. I cannot guarantee the accuracy of this data. If this is important to you, please verify with your favorite nutrition calculator and/or metric conversion tool.
Originally published on Oct 10, 2014
Learn How to Bake the Perfect Cake!
Tips, techniques, and troubleshooting to help ensure your cakes come out perfect every single time!
Trying to replicate my grandma’s cake. Duncan Hines Butter Golden comes closest in taste but the crumb is much too soft and “squishy.” If I follow your recipe with the Duncan Hines box cake will it keep/enhance the flavor but make it more sturdy? I want to make it sturdy without making it dense like a pound cake.
I am doing 2 10 x 2 inch square layers. I looked at the conversion site you recommended and it looks like it requires twice the amount of batter than the 2 8 x 2 layers you say works for this recipe. Am I converting this right? Also, I am doing Devils Food cake mix. Should I add cocoa in place of flour? Thank you! I can’t wait to try this!
Hi Tiffany! Yes, it looks like doubling the recipe should be perfect for two 10″ square pans. I wouldn’t replace all of the flour with cocoa but you can replace some of it. Instead of 1 cup flour I’d do 3/4 cup flour and 1/4 cup cocoa.
never made a cake before. i wanted to make one for my mom for her 47th birthday and i knew i wanted to really knock her socks off. i used this recipe and it was amazing i’m so happy with how it turned out. thanks for sharing the recipe
Thank you for this recipe. I am planning on making it for the holidays with my almost 7 year old baby girl. I am curious is to what is the function of the sour cream. I have never used it in any kind of desserts. Not even Cheesecakes!
Thank you!
This is definitely my new favorite recipe to improve cake mix. I made cup cakes following the recipe exactly and they are so good my family is begging me not to put frosting on them. They are delicious even without frosting. I reduced the baking time to 13 minutes because I used a Cuisinart small oven, the kind that has air fryer too.
I’m so excited to try this recipe!!! Is it ok to leave the cake out for the night? I wasn’t sure with the sour cream in it. I’d like to try to make it the night before for my daughter’s birthday.
Hi Kristen! Totally fine to leave the cake layers at room temperature overnight. But you could also refrigerate them. I find chilled cakes easier to frost 🙂
Tested out some different flavors. Exactly where I like the consistency to be. 🙂
I was wondering if you have a recommendation to add something for lemon flavor. Juice? Zest? I used a lemon cake mix (Duncan Hines) to start, which usually has the perfect flavor, however I feel like the added ingredients ‘watered down’ the flavor a bit.
Marie says
I just notice that the oil you put is only 2 Tbsp. Will the cake not go dry easily?
Olivia says
Hi Marie! Not at all, the sour cream adds a ton of moisture!
Sharon says
I have used his recipe four times and it is absolutely delicious!
Olivia says
Hi Sharon! I’m so happy that you love it 🙂
Jamie says
What time is recommend for a 9×13 dish??
Olivia says
Hi Jamie! Baking time will be somewhat similar, but ovens vary so be sure to check on it periodically.
Lorraine says
Can I use a cake mix that has pudding in the mix with your special additions?
Olivia says
Hi Lorraine! I haven’t tried this myself but I think it would probably be fine 🙂
Cavet says
I consider it a perfect recipe and thank you
Olivia says
Thank you Cavet! I’m glad you loved it 🙂
Janeen says
Thanks! I’ll give it a try and report back 🙂
Janeen says
Trying to replicate my grandma’s cake. Duncan Hines Butter Golden comes closest in taste but the crumb is much too soft and “squishy.” If I follow your recipe with the Duncan Hines box cake will it keep/enhance the flavor but make it more sturdy? I want to make it sturdy without making it dense like a pound cake.
Olivia says
Hi Janeen! It should definitely be more sturdy that just a straight-up box mix. Let me know what you think!
Duane says
Can I replace the vegetable oil with butter?
Olivia says
Hi Duane! You can, but it would make the cake a bit more dense. I recommend using melted (cooled) butter.
Duane says
Thank you so much
Whitney says
Is sugar considered a wet ingredient?
Olivia says
Hi Whitney! I consider it dry in this recipe.
Rose says
What about german chocolate
Olivia says
Hi Rose! German chocolate will be just fine. You may want to replace some of the additional flour with cocoa powder. I’d suggest 1/4 cup.
Tiffany Kourofsky says
I am doing 2 10 x 2 inch square layers. I looked at the conversion site you recommended and it looks like it requires twice the amount of batter than the 2 8 x 2 layers you say works for this recipe. Am I converting this right? Also, I am doing Devils Food cake mix. Should I add cocoa in place of flour? Thank you! I can’t wait to try this!
Olivia says
Hi Tiffany! Yes, it looks like doubling the recipe should be perfect for two 10″ square pans. I wouldn’t replace all of the flour with cocoa but you can replace some of it. Instead of 1 cup flour I’d do 3/4 cup flour and 1/4 cup cocoa.
kyle says
never made a cake before. i wanted to make one for my mom for her 47th birthday and i knew i wanted to really knock her socks off. i used this recipe and it was amazing i’m so happy with how it turned out. thanks for sharing the recipe
Olivia says
Hi Kyle! Yay for your first cake! I’m so happy you loved this recipe 🙂
Aditi says
Thank you for this recipe. I am planning on making it for the holidays with my almost 7 year old baby girl. I am curious is to what is the function of the sour cream. I have never used it in any kind of desserts. Not even Cheesecakes!
Thank you!
Olivia says
Hi Aditi! Sour cream helps cut some of the sweetness but mostly it helps add a ton of moisture!
Tonya says
Yes sour cream or greek yogurt I dont think i have had a dry crumblely cake since..😋
Elgie says
This is definitely my new favorite recipe to improve cake mix. I made cup cakes following the recipe exactly and they are so good my family is begging me not to put frosting on them. They are delicious even without frosting. I reduced the baking time to 13 minutes because I used a Cuisinart small oven, the kind that has air fryer too.
Olivia says
Hi ELgie! I’m so happy you loved it. Thanks for the tip on timing of the cupcakes!
Sydney says
Hi I was wondering if I still bake it for 50 mins if i’m doing three 6 inch cakes?
Olivia says
Hi Sandy! The baking time should be similar. But make sure not to fill your pans more than 2/3 full.
Jean says
Can I use a Bundt pan for this cake
Olivia says
Hi Jean! Yes, that should be fine. You just need to increase the baking time.
Jen says
Did you try it, and if so, how long did you bake it?
Brígida says
Hi! I was wondering if I can use only egg whites instead of the whole egg!?
Thank you 😊
Olivia says
Hi Brígida! Yes for sure. Use 5 egg whites instead of 3 whole eggs.
Kristen says
I’m so excited to try this recipe!!! Is it ok to leave the cake out for the night? I wasn’t sure with the sour cream in it. I’d like to try to make it the night before for my daughter’s birthday.
Olivia says
Hi Kristen! Totally fine to leave the cake layers at room temperature overnight. But you could also refrigerate them. I find chilled cakes easier to frost 🙂
ROBYN P says
Tested out some different flavors. Exactly where I like the consistency to be. 🙂
I was wondering if you have a recommendation to add something for lemon flavor. Juice? Zest? I used a lemon cake mix (Duncan Hines) to start, which usually has the perfect flavor, however I feel like the added ingredients ‘watered down’ the flavor a bit.
Olivia says
Hi Robyn! I totally get how it would be watered down a bit. I would add 1 Tbsp of both zest and juice 🙂
Rafael says
Hi.. Can i do this same recipe with a Chocolate Cake Mix?? If so, would i have to do any changes?? Thank you much!
Olivia says
Hi Rafael! Yes, it will work with chocolate cake mix. No changes required.