Layered Dark Chocolate and Egg Nog Mousse Cake

First of all, THANK YOU to all of you wonderful well wishers! As you know, I’m having a baby and yesterday I found out what I’m having….a BOY ๐Ÿ™‚ We are so thrilled! We were given a heads up at our first ultrasound that it would probably be a boy, but this last appointment confirmed it. My little one was hoping for a sister, but she’ll just have to deal with a brother. Lol! We’re now starting to get serious about a name….except I’m indecisive. Luckily we have 20 more weeks to figure that out! We narrowed it down to 2….but then my husband added 2 more to the list. {umm…what? Is he allowed to do that?} So, at this point we’re sticking with Baby Boy Brennan ๐Ÿ™‚

Anyways, I have a killer recipe for you all today! This chocolate cake is fabulous as is, but because it’s the holidays, I layered it up with some really simple egg nog mousse. It’s fabulous, creamy, cold and super chocolatey! How every cake of the chocolate variety should be, in my humble opinion. –>Never mind. I’m really not that humble when it comes to cake.

I loosely based this cake off of this pumpkin cake, but made it more festive for Christmas. It’s the kind of treat that looks fancy, but couldn’t be simpler! And you don’t need any special pans or ingredients…unless you classify a half sheet pan and/or egg nog as special. Whatevs. Totally normal stuff I have this time of year.

Here’s how you make this awesome cake:

Start by softening some butter. I had salted and unsalted butter in my fridge so I used both. Use what you have! No big deal!

Cream your butter with some granulated sugar until light and fluffy.

While that is mixing, chop up some unsweetened dark chocolate. I used Scharffen Berger.

And you’ll also want to mix together some dry ingredients. Simple stuff: flour, salt, baking soda and unsweetened cocoa powder. Again, using Scharffen Berger cocoa.

Back to the bowl. Stir in eggs and vanilla into your butter and sugar.

Scrape the bottom of the bowl and mix again. It should be a little more liquidy, but still pretty airy.

Now we can dump in the dry ingredients…

along with some buttermilk and sour cream. I love adding both of these ingredients to any cake because it keeps it so moist! All cake in the world should be moist. Amen.

So, the last thing to do is melt down that chocolate you chopped and stir it into the batter.

Spread it into a well greased half sheet pan and bake. It will spread really thin, but should grow to be about 1/3-1/2 of an inch thick.

Like so! Let it cool and then cut into equal fourths, width-wise.

Pie 19While the cake is cooling, we can make the egg nog mousse. Calm down. It’s not REAL mousse. I’m a pregnant impatient lady. I made a box of instant vanilla pudding with egg nog instead of milk and then folded in a bunch of whipped cream. THAT’S IT. Store this in the fridge until you’re ready to assemble.

Once you are ready to go, layer cake and mousse 4 layers high and then top with lots of chocolate shavings. {I just took a vegetable peeler to a big hunk of chocolate….super simple.} Store this in the fridge until you’re ready to serve ๐Ÿ™‚ So yummy, guys! You must must must try it this holiday season.

My friends atย Scharffen Bergerย want you to win this delicious prize pack and try out their awesome products…like in this cake! Lots of yummy products to try…perfect for the chocolate-loving baker in your life!

Included in this prize:
-3 chocolate baking bars: semi sweet dark chocolate, bittersweet dark chocolate, unsweetened dark chocolate
-tasting squares
-1 box cocoa nibs
-1 can of unsweetened cocoa powder
-The Essence of Chocolate Cookbook

Why I love Scharffen Berger:
-Umm…hello? It’s a chocolate company that only sells chocolate. I’m sold.
-All of their products I’ve ever tried are the highest quality. Because it’s somewhat of a smaller organization, they have better quality control over all their products and you can tell. At least I can.
-All of their baking bars are amazing and they melt into recipes so well! This chocolate cake is the perfect example. On the Scharffen Berger website, you can read about how their chocolate is perfectly crafted…and I would have to agree. It’s amazing to work with and I’ve never had a problem.
-Their cocoa powder is the chocolaty-ist ever. {Yes, that’s a word.} I compared their cocoa powder to a store bought version and the difference in color was amazing.
-Scharffen Berger does a chocolate recipe contest every year called The Chocolate Adventure Contest. Basically, you make a recipe with one or several of their ‘adventure ingredients’ and you could win $25,000. Not too shabby for a recipe!

Here’s how you can enter to win:
a Rafflecopter giveaway

And now for the recipe-


Layered Dark Chocolate and Egg Nog Mousse Cake

Yield: 12 servings


  • for the cake:
  • 10 tablespoons butter, softened
  • 1 1/4 cups granulated sugar
  • 2 eggs
  • 1 teaspoon vanilla
  • 1 cup all purpose flour
  • 1/2 cup unsweetened cocoa powder
  • 3/4 teaspoon bakings soda
  • 1/4 teaspoon salt
  • 1/2 cup buttermilk
  • 1/2 cup sour cream
  • 3 oz. bittersweet dark chocolate, melted
  • for the egg nog mousse-
  • 2 cups egg nog
  • 1-3.4 oz. box instant vanilla pudding {small box}
  • 3/4 cup heavy cream
  • chocolate shavings, for garnish


  1. Preheat oven to 350 degrees. Spray one half sheet pan with non stick cooking spray and set aside.
  2. In a large bowl, whip butter and sugar together until light and fluffy. Stir in eggs and vanilla. In a small bowl, combine flour, cocoa powder, baking soda and salt. Alternate adding in dry ingredients with buttermilk and sour cream. Scrape sides, pour in melted chocolate and mix again briefly. Pour into prepared baking sheet and spread as evenly as possible. It will be a very thin layer. Bake 10-12 minutes or until toothpick comes out clean when inserted. Cool completely.
  3. For the mousse, whip cream until stiff peaks form. Set aside. In another bowl, whip egg nog together with vanilla pudding until it starts to thicken. Fold in cream. Refrigerate until ready to assemble.
  4. For assembly, cut chocolate cake into 4 even pieces width-wise. Using a large spatula, remove one of the four pieces and place carefully onto a serving platter. Top with 1/4 of the egg nog mousse. Continue this layering process until you have 4 layers of cake with egg nog mousse in between each, being sure to finish with egg nog mousse. Top with chocolate shavings and refrigerate until serving. Slice into pieces and serve cold.



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  1. Lauren,
    You’ve done it again! and isn’t Scharffen Berger chocolate the best! I have to make a point to tell our teenage boys to leave it alone or they will eat the semi-sweet or dark chocolate baking bars. Trust me, more than once I’ve gone to make something and only found a partial bar… I think my husband sneaks nibbles too.. ๐Ÿ™‚ (I can’t blame them as it is so good!!)

    Congratulations once again!!

  2. Lauren,

    Congratulations on your little boy!

    I just made another batch of your Lemon Crinkles yesterday. All
    it takes is one cookie, and I have people asking for the recipe!

    This chocolate cake looks delightful. I can’t wait to try it.

  3. Congrats on the “boy” news! This recipe looks divine! Iv’e never tried SB products, but would love to ๐Ÿ™‚

  4. you know when you see a picture, then a recipe and you HAVE to have it, like right away? This is that for me..Ive been wanting it since you put it on Instagram…I am SO happy to not have to wait any longer! ha! THANK YOU!

  5. yum yum yum! i am an email subscriber

  6. Oh my gosh! This looks amazing and sounds super easy to make! Since my husband loves chocolate and I love eggnog this cake will be the perfect compromise! ๐Ÿ™‚

  7. I rarely eat chocolate as candy but I’ve used Valrhona and Trader Joe’s Pound Plus for baking and they were ok. I’ve heard great things about Scharffen Berger but haven’t tried any of their products as yet. I’ll have to add it to my list of things to look for and pick a recipe to test the different chocolate brands.

    The cake looks delicious! I tried egg nog as a kid but didn’t like the texture so I haven’t had any since about the age of 5 or 6. Its been quite a few years so maybe I should give it another shot this holiday season.

    Congrats on your baby boy!

  8. Omg, I could just eat that giant sheet of chocolate cake. But the egg nog “mousse” sounds pretty good too ๐Ÿ™‚
    Congrats on the boy! And the new site looks great!

  9. Where was this when I was trying to figure out what to bring to today’s Christmas brunch? This looks amazingly easy and I think I would cheat and do a cake mix. I always add a little Jack Daniels because it makes my cakes moister and fluffier. Jack is good in soooo many things!!

  10. I signed up for emails !

  11. My husband loves eggnog, I might have to make just the egg nog mousse for him! ๐Ÿ™‚

  12. I love chocolate and your email updates!

  13. email subscriber

  14. i get your e-mails

  15. I’m an email subscriber. Congrats on the little boy! My daughter refused to accept the possibility of a brother too!

  16. Oh my goodness, this looks amazing! I’m a subscriber too ๐Ÿ™‚

  17. It’s like Christmas tiramisu! Thank you for sharing!

    (Wonder how divine a spiked version of this would be….

    Don’t try until after the baby!)

  18. I’m signed up for your newsletter. Thanks for the recipe (& and the giveaway)!

  19. Yumm!!! I subscribe to your emails!

  20. I receive email updates.

  21. Already an email subscriber.

  22. Email subscriber

  23. I get email updates.

  24. Subscribed by email.

  25. Tiramisu is the best!

  26. I pinned this recipe ..looks so yummy .. and congrats by the way for having a boy ๐Ÿ™‚

  27. Thanks for this recipe!

  28. Mmmm looks good. I signed up for emails.

  29. Congrats!! ๐Ÿ˜€

  30. I have never had an eggnog mousse cake. It looks and sounds superb!!!

  31. This looks so good!

  32. I haven’t eaten breakfast yet, but I want a piece of this cake!!!!

  33. Hi Lauren!
    First of all congrats on this amazing site!!!
    My question is very simple: since I am in Uruguay, South America, and there isn’t anything like eggnog, do you think it would be fine if I substitute it with condensed milk?

    Please do let me know since it looks absolutely amazing + ideal for Xmas dessert!


    PS I would love you to have a look at my Facebook Pequeรฑos Gourmets en Acciรณn and let me know what you think ๐Ÿ˜‰

    • Condensed milk would not be a good substitution. Try googling homemade egg nog recipes for a better substitution.

      • Tks so much Lauren!
        Wishing you a merry Christmas with your baby boy and family!


  34. Made this for Christmas 2016….Fabulous recipe. I had a guest turn down dessert at first…then had a bite. He had TWO slices ! A holiday must !



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