Lotus Biscoff Brownie Drip Cake

4th August 2020

Three thick chocolate brownie layers, sandwich between a Biscoff cookie butter buttercream and finished with Biscoff drip and Lotus Biscoff cookies.

Ok, I did it, I created my Birthday cake of dreams!

This cake was everything I wanted and more. Three layers of thick dense brownie, sandwiched between a Biscoff spread (cookie butter) butter cream and decorated with a Biscoff drip, and crushed Biscoff biscuits.

This cake makes 3 x 8 inch cake tins, I love doing three layers, it adds an amazing height for drip cakes and just has a bit more ‘wow’ factor.

Other tools you will need are:

  • 10″ cake board
  • Small palette knife, to smooth the buttercream
  • 1 sandwich bag or piping bag with the end snipped to create the drip
  • 1 piping bag with a 2D star nozzle attached for decorating

Making the brownie layers is straightforward, simply mix the wet ingredients together, followed by the dry ingredients, then mixing the two together to create a brownie batter.

I started to check my brownie layers after 25 minutes, it’s a fine line between raw, fudgey and cakey, mine did take a good 35 minutes to be baked. After they are baked they must cool fully before icing!! Otherwise the buttercream will melt and it will be a slop! I tend to make my layers the day before I want the cake, wrap them in clingfilm once cooled, then decorate the next day, then I can fully focus on each element.

Now the buttercream… Biscoff heaven!! I added less icing sugar than what I would usually to a buttercream mix, purely because the Biscoff spread adds it’s own sweetness, and I didn’t want it to be sickly.

Chocolate brownie cake with Biscoff cookie butter frosting

Recipe by Sarah's Healthy KitchenCourse: DessertDifficulty: hard


Prep time


Cooking time



The ultimate birthday cake. Three layers of chocolate brownie cake with a creamy Biscoff (cookie butter) buttercream, finished with a Biscoff drip.


  • For the Brownie layers:

  • 225g unsalted butter

  • 500g semisweet baking chocolate, chopped

  • 400g caster sugar

  • 260g dark brown sugar

  • 190g all-purpose flour

  • 170g unsweetened natural cocoa powder

  • 1 1/2 teaspoon baking powder

  • 1 tsp salt

  • 10 large eggs, at room temperature

  • 230ml vegetable or olive oil

  • 2 tsp vanilla extract

  • For the Biscoff buttercream:

  • 375 g unsalted butter, at room temperature

  • 600 g icing sugar

  • 400 g Biscoff spread

  • For Decoration:

  • 200 g Biscoff Spread

  • Biscoff buttercream (save a piping bags worth from above)

  • Biscoff biscuits

  • Tools you will need:

  • 3 x 20cm/8″ loose base tins

  • Greaseproof paper

  • 10″ cake board

  • Small and large palette knife

  • Piping bags

  • 2D star nozzle


  • To make the brownie layers:
    Preheat your oven to 180°c/160°c fan, and line three 8 inch cake tins with parchment paper.
  • Cube the butter and break up the chocolate into a large heat proof bowl. Then microwave in small increments until melted and smooth
  • Add the sugars, whisking until well combined, the gradually add the eggs one at a time whisking well after each addition.
  • Add in the oil and vanilla and whisk again until combined. 
  • In a separate bowl, stir together the flour, cocoa powder, baking powder, and salt.
  • Add the flour mix to the wet ingredients and gently fold to combine.
  • Divide the batter between the three cake tins. Bake for 35-40 minutes, or until the tops are dry and a cake tester inserted in the middle comes out with a few crumbs attached.
  • Cool in tins for 10 minutes, then transfer to a wire rack and allow to cool completely.
  • For the buttercream:
    Add the butter to either a stand mixer or a large bowl and beat until smooth and light. (I used a stand mixer but an electric whisk will do the trick too)
  • Gradually add in the icing sugar and beat until it’s light and fluffy!
  • Weigh out the biscoff spread into a heat safe bowl and microwave for 10-15 seconds until runny. Add this into the mixture, beating until fully combined. If its really stiff, add in 1tbsp of boiling water.
  • To decorate:
    Add a tsp of buttercream to a 10 inch cake board, then add the first brownie layer to the centre and spread over some of the buttercream with a small palette knife. Add the second layer and repeat. Cover the top and sides of the cake in a thin layer of buttercream and use a palette knife and scraper to create a smooth finish. Ensure you have 3-4 tbsp of buttercream remaining for decoration. Then place in the fridge for 15 minutes before doing the drip.
  • To do the drip:
    Carefully melt down the Biscoff spread in the microwave for 15-20 seconds until drippable, but not really runny! Pour into a piping bag and once full snip a small hole at the end. Start at the edge of the cake and carefully drip down the side, applying different amounts of pressure to the piping bag to create bigger and smaller drips, then fill in the centre after the drips are done, smoothing with a small palette knife going from the outside, working inwards.
    Set the cake in the fridge again for 10-15 minutes. 
  • Finally, add any left over buttercream to a piping bag with a large star nozzle and begin to pipe big stars around the top. Finish by adding more biscuits to decorate.

Recipe Video


  • This cake will keep for 3-4 days.
  • Once the brownie layers are baked and cooled, they can be stored in the fridge, wrapped tightly in cling film, for up to 2 days before assembling.

Join the Conversation

  1. Hello, I stopped by to take this biscoff drip cake recipe and I just say it was a hit. I was looking the perfect birthday cake and as a biscoff lover the birthday boy absolutely loved it! It is a very very sweet cake, netherless addictive. Thank you 🙂

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