Sinfully Rich Brownies (shhh…from a box mix)

I have no problems using box mixes.  There, I said it.  They are my go to when I need a quick dessert.  Or when my intended dessert fails miserably and I need something FAST!  Like recently, when I spent two hours making cookies that sadly only made it to the garbage can.  All two dozen cookies.  They were terrible.

Suddenly, I was scrambling for a dessert and it had to be something quick.

Then I stumbled upon a recipe from one of the cookbooks my mother-in-law gave me when Brett and I got married.  It’s a collection of recipes women from her church put together:  “Sinfully Rich Brownies….a chocolate lover’s dream.”  And they were from a box.  These were my ticket!


I’m sure if you were to google “how to spruce up a box brownie” you’d find a similar recipe in the mix of results.

All you need to do is change out the water the box recipe calls for with milk or whipping cream (I chose whipping cream), double the number of eggs the box calls for, then add a splash of vanilla and some chocolate chips and you’ve got some seriously rich and decadent brownies.

No one will know they were from a box!

Sinfully Rich Brownies
Rich and delicious brownies that nobody will believe came from a box!
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  1. 1 family-size pkg brownie mix
  2. double the number of eggs called for on box.
  3. Milk and or cream in place of water
  4. oil called for on pkg mix
  5. 1 1/2 tsp vanilla
  6. 2 cups semi sweet chocolate chips (I used half milk chocolate chips, half white chocolate chips)
  7. Chopped pecans (optional)
  1. Preheat oven to 325.
  2. Mix ingredients in the order listed (you still use the oil recipe calls for). Mixture will be thick.
  3. Grease a 9X13 in pan well, then press brownie mixture into the pan. Bake for about 40 minutes.
  4. Let brownies cool in pan, then cut in pan with a wet sharp knife. (Using a wet, sharp knife was a new trick for me and it works great!)
  1. ***I sprinkled some powdered sugar over the top just before cutting them, just to make ‘em pretty!
boys ahoy


  1. claire September 7, 2011

    LOVE how easy and simple this is… i always keep a box in my kitchen- JUST IN CASE!

  2. Manina September 7, 2011

    Great. I hope you aren’t bringing these to the lunch and munch today. I am bringing some and I just followed the recipe on the box! :)

  3. randomcreative September 7, 2011

    I love spicing up mixes! I will definitely bookmark this.

  4. @ Mania–don’t worry, I’m not bringing them today! I’m sure yours will be great! Thanks for commenting:)

  5. Allison September 7, 2011

    This has official become this Sunday’s (aka Cheat Day) dessert. I think I will eat the entire pan…by myself.

  6. Rachel H September 7, 2011

    sprucing is the best;) no matter what brett says.

  7. Dorothy @ Crazy for Crust September 7, 2011

    I am so going to try these. I love box brownie mix (I have yet to find a “from scratch” recipe that compares.) Your photos are beautiful too.

    I’ve started my own linky party, Crazy Sweet Tuesdays, and would love for you to join sometime!

  8. Karly September 8, 2011

    Um, you’re a genius. An evil genius.

  9. Anonymous September 8, 2011

    For natural brownies go to

  10. myfudo September 8, 2011

    Diabetics will surely commit sin if these brownies will catch their attention. Look so enticing.

  11. Moogie September 9, 2011

    Yum…. love this wonderful recipe.

  12. Dorothy @ Crazy for Crust September 11, 2011

    Again, these sound positively sinful. Thanks for sharing on Crazy Sweet Tuesday!

  13. Allison September 12, 2011

    Well…I made the brownies…and they were amazing. I have a few left and I’m asking my husband to hide them from me. I linked your recipe to my post for today!

  14. Karen December 23, 2011

    Always a hit when I make these!

  15. jenn April 17, 2012

    these are the best I didn’t have enough choc chips, only one cup left and so I added 1c. pecans and I found some marshmellow cream and added that. OmG! The best!

  16. Thanks for the great idea of changing a box mix. I will try doing that next time I make some brownies.

  17. Anonymous January 24, 2013

    One tip for cutting brownies is to use a plastic knife, I read it somewhere years ago, and it works great!! The brownies don’t pull up and make a mess like when using a knife from the silverware drawer!!

  18. Anonymous February 11, 2013

    I dont have choc. chips! ;c Any suggestions!??

    • Kristy Denney February 12, 2013

      Do you have any kind of chip? Butterscotch? White Chocolate? Peanut butter? You could leave them out, the brownies will still be rich!

  19. lisa May 9, 2013

    are the brownies suppose to still be wet when u test it with a tooth pick after 40 mins please help me.

    • Kristy May 10, 2013

      They should be done when they come out mostly clean after the toothpick test, shouldn’t be wet

  20. Susan September 7, 2013

    ok my batter was not thick at all! It was thinner than if I followed the directions on the box :-(

  21. Jessica Loyola September 18, 2013

    I am about to bake this recipe for my husband. I’ll let you know if he fell more in love with me after trying these . They sound delish!

  22. Jessica Loyola September 18, 2013

    Ok so they turned out delicious. I was wondering…. do your chocolate chips melt? Mine didn’t :(

    • Kristy September 18, 2013

      I’m pretty sure mine did, but it’s been a while since I’ve made them:)

  23. Martha November 25, 2013

    Thank you so much, I had a recipe similar to this and lost it and my family was on the verge of mutiny. I make the even a little more sinful by replacing the oil with 1/2 cup of melted butter. Yummmmm

  24. Jessica Loyola February 13, 2014

    Hello! Me again! I’m absolutely in love with your brownies! I have a question for you, can I make these as cupcakes? I’m thinking about baking them in cupcake cups but not sure if they will bake differently. What do you suggest! Thank you! :)

  25. Bonnie February 17, 2014

    Awesome recipe! Remember not to overcook. I cooked it for about 45 min and it was still a tad gooey and took them out anyway and they turned out perfect once they cooled down :)

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    • Kristy February 25, 2014

      Yes, I think you could;)

  27. eva March 2, 2014

    this is such a good idea! def going to try this with the walnut brownie mix I got, it will surprise the whole family. :)

  28. Terri March 16, 2014

    What size is family size box? I have an 18.4 oz box mix.

  29. Melany July 24, 2014

    I’m going to try this recipe today, my family is dying for some brownies lately. I’m just not the best baker in thee world so I really hope these come out great!

  30. Xsta August 28, 2014

    I find that when I double the eggs, brownies come out more dry and cake-like than dense and fudgy.

    • Tara October 12, 2015

      Mine too!!!!! 😝 I hate cakey brownies!

  31. chloe fisher May 5, 2015

    I liked all the suggestions but when I made this recipe, doubling the eggs made the brownies less chewy and fudge and more like cake. I would suggest using the amount the box recommends.

  32. Tara October 12, 2015

    Mine came out cakey!!!! Not gooey or decadent at all. I used family size betty crocker fudge brownie mix. Doubling the eggs made 4, I used half and half to get some cream and the rest the same. I just read fine print on box and it said using extra egg makes em cakey. Ugh. I hate cakey brownies.


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