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S’mores Chocolate Éclair Cake

03.26.2021

My favorite childhood dessert was a chocolate eclair sheet cake my mom would make. It is simple but always perfectly delicious and never did I see someone try it without asking for the recipe. It’s that good. This is a complex version of that with the added bonus of toasted marshmallows. Imagine Boston cream pie and s’mores fused into one very decadent, kind of messy, melty little joyful treat.

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S’mores Chocolate Eclair Cake + Brown Sugar Graham Cracker Cake Layers + Vanilla Bean Custard + Salted Dark Chocolate Ganache + Toasted Homemade Marshmallow Fluff

Prep Time 30 minutes mins
Cook Time 30 minutes mins
Total Time 1 hour hr

Ingredients

S’mores chocolate éclair cake:

  • 1-1/4 cups whole wheat cake flour
  • 1 cup graham cracker crumbs
  • 1 tsp baking powder
  • 1/2 tsp Himalayan sea salt
  • 1 tsp cinnamon
  • 1 cup Myokos oat butter
  • 1/4 cup coconut sugar
  • 3/4 cup brown sugar light
  • 3 eggs large
  • 2 egg whites
  • 1/2 cup almond milk
  • 3/4 cup Greek yogurt
  • 1 tbsp vanilla bean paste

Vanilla bean custard:

  • 1/4 cup coconut milk
  • 1 cup almond milk
  • 2 tsp maple syrup
  • 2 tsp vanilla bean paste
  • 1 tbsp arrowroot powder

Salted dark chocolate ganache:

  • 8 oz dark chocolate chips Lily's
  • 1 cup coconut milk or coconut cream full fat
  • 1/2 tsp Himalayan sea salt

Toasted homemade marshmallow fluff:

  • 1 can chickpeas or white beans drained, salt free
  • 1/2 cup lakanto sugar white
  • 1 tsp vanilla bean extract
  • 1 tsp cream of tartar

Instructions

  • 3 layer, 6-inch cake
    Preheat Oven to 350 degrees.
    Grease 3 cake pans with nonstick coconut oil.

S’mores chocolate éclair cake:

  • Whisk the dry ingredients together. In a separate bowl, mix the almond milk, vanilla bean paste and Greek yogurt.

    Cream the butter in a standing mixer. Add in both sugars. Cream until fluffy.
    Add the eggs and egg whites in and mix well. Add to the milk mixture. 
    Add the dry mixture to the wet mixture and stir until incorporated but do not over mix. 
    Pour batter into greased pans and bake for about 30 minutes. 

Vanilla bean custard:

  • Add arrowroot powder to a saucepan and mix it with the coconut milk until smooth. 
    Add in the almond milk, vanilla bean paste and syrup to the saucepan, whisk to combine. Bring to a boil, stirring frequently.
    Turn heat to low and continue to stir until the mixture thickens into a cream.
    Let cool and store in refrigerator. 

Salted dark chocolate ganache:

  • Scoop the cream from the can of coconut milk. A can of coconut cream works best.
    Microwave the coconut milk for 1 minute, make sure it doesn’t bubble over. Pour the warm cream over the chocolate chips and let sit for 3 minutes without stirring.
    Whisk the chocolate and melted coconut milk until smooth. Stir in the sea salt. Let cool to frost.

Toasted homemade marshmallow fluff:

  • Add the water from the can of chickpeas, vanilla, and cream of tartar to a large bowl. Beat for about 1 minute until it starts to get fluffy.
    Add in the sugar a little at a time while the mixer is on. Beat for approximately 10- 12 minutes until stiff peaks are formed. The fluff should be glossy and stiff. It shouldn’t jiggle.
    Add a thin layer of custard in between each cake layer. Frost with ganache and decorate with homemade marshmallow fluff and toasted marshmallows!

Notes

Making homemade marshmallow fluff can be tricky and took me a few try’s. Store-bought works just as well and is fool proof!

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Hi, I’m Arianna

an architect turned baker.

Behind each of my recipes, you will find a thoughtfully curated balance of sweet and savory flavors creating intrigue for both the eye and palette. Desserts to me, are about thoughtfulness and imagination while keeping a healthy balance in mind. In my eyes, the process of architectural design and the process of creating a recipe then composing its structure as one in the same.

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S’mores Chocolate Éclair Cake

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