Double Decker Brownies

Hey guys! A delicious new brownie recipe for you today! Double Decker Brownies! Crispy, Gooey, Fudge Brownies packed with Double Decker Bars!! Chocolate overload!!

You can keep your bars whole or chop them up into pieces its up to you. I used about 10 snack size multipack bars whole so when I sliced into my brownies there was a nice cross section in every brownie. Feel free to change this recipe up and use any of your favourite chocolate bars.

Please wait for your brownies to cool before cutting. This will make sure you get a nice and clean cut. I always get asked how do I cut them so well and its literally all down to letting them cool 100%. Also leave them in the fridge for an extra hour and then cut with a hot knife to get them super sharp and professional looking.

If you have any questions Dm me on Instagram. Happy Baking! <3 Keep an eye out on my Instagram for a Reel of me making these Double Decker Brownies!

Double Decker Brownies

Crispy, Gooey, Fudge Brownies packed with Double Decker Bars!! Chocolate overload!!
4.62 from 18 votes
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Course: Dessert
Cuisine: Irish
Keyword: Brownies, double decker
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings: 16
Author: Gill


  • Bowls
  • Electric whisk
  • Spatula
  • Baking paper
  • 8×8 Tin
  • Weighing scales


  • 140 grams Butter
  • 100 grams Dark Chocolate
  • 300 grams Caster Sugar
  • 60 grams Cocoa Powder
  • 2 Eggs
  • 1 tsp Vanilla Extract
  • 100 grams Plain Flour
  • Double decker bars (Use how many you like)


  • Preheat oven to 200C/180C Fan. Grease and line your 8×8 Square tray.
  • Melt butter and chocolate in the microwave. Leave to cool for a few minutes.
  • Add your eggs and sugar to a bowl and whisk until fluffy.
  • Whisk in your chocolate and butter mix until combined.
  • Mix in your vanilla.
  • Fold in the sieved flour and cocoa till just combined.
  • Pour half of the mixture into the baking tray. Layer on your double decker bars, I kept them whole and covered most of the area but you can use how many or how little you like! I used about 10 snack size bars.
  • Pour the remainder of the mix on top and smooth out till flat.
  • Bake for 30-35 minutes. There will be a slight jiggle in the center of your brownies.
  • Leave to cool completely. I put mine in the fridge for awhile after cooling so I get a nice and sharp cut.
  • Portion up into servings using a hot knife.
  • Enjoy!!

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