Peanut Butter Chocolate Mousse Cake #TwoSweetiePies

I whipped up this Peanut Butter Chocolate Mousse Cake for our annual summer book club dinner. A brownie layer was topped with chocolate and peanut butter mousses for an exquisite dessert!
Peanut Butter Chocolate Mousse Cake | A brownie base topped with both peanut butter and chocolate mousse make a dream dessert!

Peanut Butter Chocolate Mousse Cake

Ours is a house divided. No, I’m not referring to the Indiana University and Purdue University rivalry between my two sons. I’m talking about the peanut butter division. You see, I love peanut butter in desserts, but never straight up or in sandwiches. Blech. The hubby is a fan of peanut butter sandwiches but gives a cold shoulder to peanut butter cookies, peanut butter Rice Krispie treats and all the other peanut butter sweets I adore. My oldest son and daughter are on my team, and our youngest agrees with dad. So I save up my most decadent peanut butter creations for when I’m entertaining or bringing a dish to a pitch in dinner. I saw this Peanut Butter Chocolate Mousse Cake on Hugs & Cookies XOXO and patiently waited for the perfect occasion to make it.

Peanut Butter Chocolate Mousse Cake | A brownie base topped with both peanut butter and chocolate mousse make a dream dessert!

An Unprecedented Hit

Even though we were all stuffed to the gills with all the marvelous food at our book club pitch in dinner, everyone had room for a  bit of dessert. There were swoons and groans and slices taken home after I dished up some slivers of this mousse cake. The biggest surprise of all, though, was at home. Both Bill and Nick had a slice the next night. I told them they could scrape off the peanut butter mousse and focus on the chocolate elements. Well, they both licked their plates clean. Nick commented that the peanut butter flavor wasn’t overly intense, though he didn’t eat his peanut butter garnish. Baby steps!

Peanut Butter Chocolate Mousse Cake | A decadent brownie topped with exquisite chocolate and peanut butter mousses!

Two Sweetie Pies

Thanks again to my lovely friend, Danielle, for another magnificent recipe! She is my go-to blogger for decadent treats. I promise you will love whatever you try from her blog!!! We share a recipe from each other’s sites every second Monday of the month.

Check out Danielle’s take on this Peanut Butter Chocolate Mousse Cake as well as her social media sites! Make sure to check out which of my recipes she made this month, too.

Hugs & Cookies XOXO – Facebook – Pinterest – Twitter – Instagram

You May Need:

Peanut Butter Chocolate Mousse Cake

Serves 12-18 servings     adjust servings

Prep Time 60 mins
Cook Time 35 mins
Total Time 1 hr 35 mins

A decadent chocolate and peanut butter dessert.

Ingredients

  • 1 box brownie mix (I used my One Bowl Fudgy Brownies and baked for 35 minutes)
  • 8 ounces Reese's minis (reserve extras from bag for garnishing)

Peanut Butter Mousse Layer

  • 1 1/8 teaspoon powdered gelatin
  • 1 1/2 tablespoons water
  • 9 ounces Reese's peanut butter chips
  • 2 1/4 cups heavy cream
  • 1/4 cup powdered sugar

Chocolate Mousse Layer

  • 1 1/8 teaspoon powdered gelatin
  • 1 1/2 tablespoons water
  • 9 ounces semisweet chocolate chips
  • 2 1/4 cups heavy cream
  • 1/4 cup powdered sugar

Peanut Butter frosting for decorations

  • 1/3 cup creamy peanut butter
  • 4 tablespoons butter, at room temperature
  • 1 cup powdered sugar

Instructions

  1. Bake brownies in a greased and parchment lined 9-inch springform pan. Cool, then remove brownie from pan once cooled.
  2. Place cooled brownie back in the pan but also line the sides all the way around with parchment. It should extend above the pan to "hold" mousse.
  3. Sprinkle the Reese's on the brownie.

Peanut Butter Mousse

  1. To make peanut butter mousse, sprinkle gelatin on top of the water in a bowl and let sit 5 minutes.
  2. Heat ¾ cup cream in microwave till boiling and then add the gelatin. Whisk well.
  3. Place the peanut butter chips in a heatproof bowl and pour the cream over the chips. Let it sit a minute and stir until smooth.
  4. Cool for about 5 minutes. Meanwhile, beat 1½ cups heavy cream on high. Add powdered sugar and beat to stiff peaks.
  5. Slowly fold the cream into the peanut butter mixture.
  6. Spread this over the brownie and Reese's layer.
  7. Chill 2 hours.

Chocolate Mousse

  1. Again, in a bowl sprinkle the gelatin over the water. Let the gelatin dissolve for about 5 minutes.
  2. Microwave ¾ cup of the heavy cream to a boil.
  3. Add the gelatin mix to the hot cream and whisk.
  4. Place the chocolate chips in a bowl and pour the cream over them. Let sit a couple minutes and whisk until smooth.
  5. Meanwhile, beat 1½ cups heavy cream on high. Add the powdered sugar and beat to stiff peaks.
  6. Fold a little cream at a time into the cooled chocolate.
  7. Once all incorporated and smooth, pour this over the peanut butter mousse layer and chill another 2 hours or longer if not firm.

To finish the cake:

  1. Once firm, remove sides of the cake pan and parchment collar.
  2. To make peanut butter frosting, beat together peanut butter, butter and powdered sugar till whipped and creamy.
  3. Pipe on rosettes with peanut butter frosting. Top each rosette with a peanut butter cup.

by

Recipe Notes

Total time does not include the 5+ hours of cooling and chilling times.
3.5.3208
Nutrition Facts
Serving Size
Amount Per ServingAs Served
Calories 917kcal Calories from fat 572
% Daily Value
Total Fat 64g98%
Saturated Fat 33g165%
Transfat 0g
Cholesterol 136mg45%
Sodium 281mg12%
Carbohydrate 85g28%
Dietary Fiber 3g12%
Sugars 58g
Protein 10g

Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs:

Calories2000
Total FatLess than65g
Sat FatLess than25g
CholesterolLess than300mg
SodiumLess than2,400mg
Total Carbohydrate300g
Dietary Fiber25g
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Peanut Butter Chocolate Mousse Cake | A brownie base topped with both peanut butter and chocolate mousse make a dream dessert!

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Comments

  1. Wow, this looks truly special! Bet it was great:@)

  2. Wow Liz!!! This came out looking just gorgeous!! So glad the son
    And hubby enjoyed it too!! another fab month. The cheesecake I made from you was out of this world!!!!

  3. Dear Lizzy, what sweet decadence! This cake is a showstopper. I love layer cakes…this is just marvelous. xo, Catherine

  4. PB and chocolate are a favourite over here too and I know this would definitely come out on top. So pretty too.

  5. This is a delightful amalgamation of two delicious favorites. And when you love them both, it’s even better! YUM!

  6. Be still my heart.. those layers of mousse look divine!

  7. What a stunning looking mousse cake. Love peanut butter, love chocolate, and love cakes too! A HUGE slice of this cake and I will be the happiest person in the whole wide world! 🙂

  8. This cake looks stunning !! Love it Lizzy!! xoxoxo

  9. Phwoar Liz, yes please! And Bill licked his plate clean – surely that proves that the recipe is a winner.

  10. This recipe looks divine! I’m a chocoholic and can’t stop starring at it! 🙂

  11. I love cakes and chocolate, i am definitely trying this out asap.

  12. Swoons and groans, haha I can only imagine! I wouldn’t want to pass up a slice of this, even if I was already stuffed from a lovely dinner. Looks rich but so light at the same time, perfect!

  13. I like a tablespoon sometimes before bed or middle of the night craving. On toast not so much. In any dessert form I love it too. And savory stews. This Peanut Butter Chocolate Mousse Cake sounds just amazing.

  14. What a gorgeous creation!

  15. This sounds and looks like a home run Liz, especially if your whole family loved it. I am a huge fan of anything peanut butter.

  16. This truly is a celebration dessert. Absolutely wonderful and my cup of tea.

  17. Holy Cow…. my husband is going to out right kiss me when I serve this! Its all his favorites rolled into one!

  18. I’m on both PB teams, in a sandwich or in a dessert I love it!

  19. Peanut Butter and Chocolate has to be my favorite dessert combination. This mousse cake will make me happy with every bite!

  20. TheKitchenLioness says:

    Dear Liz, although we do not eat a lot of peanut butter around here we still love it and whenever we visit the Netherlands, I always make sure to bring a few jars for baking cookies – I have never attempted to make a cake like this decadent treat but I already know that I would love this flavor combination a lot! It looks amazing!

  21. I can get my hubby to try lots of things but peanut butter isn’t one of them. So this would be for me only. I guess that’s good and bad!

  22. I’d be Switzerland in your family, Liz! Whether it’s a PB sandwich or an elegant Liz Berg PB Chocolate Mousse Cake, I’m in!!! P.s. Your book club is sooooo lucky =)

  23. Taking the chance of sounding like a broken disk/record – this cake looks absolutely HEAVENLY !!
    PB and chocolate is one my favorite combination ever.
    It’s not fair! It’s morning here and I’m already drooling…. 🙂

  24. LIZ OHMYGAWD. There’s chocolate mousse and pb mousse AND a brownie base??!!! pinningggggggggggg

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