Oreo filled s'mores brownies

This summer has provided the perfect conditions for outdoor family vacations. When Finley was little we dabbled in camping and really enjoyed being outdoors but now with Milo having such vocal night terrors I can't imagine being outdoors through the night and not waking every family near us... My in-laws have a caravan which we stayed in the other night and it reminded of how much I loved the camping/caravan lifestyle so hopefully we'll be able to coerce them into lending us their lovely caravan sometime soon ;)

One tradition I do miss is roasting marshmallows by the campfire and making s'mores. Gooey, marshmallowy, biscuity roasted treats which don't appear to be popular in the UK - well Fin tells me he hasn't made them at any Beavers/Cub scout camps anyway!

I love the combination of textures and flavours a s'mores gives you and when I was asked to make some brownies for my husband's work colleagues I looked in the cupboards and literally found these 3 items stacked in top of each other - digestives biscuits (like graham crackers), a bag of marshmallows and half a packet of Oreos.

I decided to combine them all in a brownie and used my favourite brownie recipe as a base for the s'mores mix ins.

The brownies turned out perfectly gooey and my decision to chill the cut marshmallow pieces prevent them from becoming non existent sugary shells like the ones I made in my brownie experiment last year. The marshmallows on top puffed up nicely like the ones you toast on the fire and then they stay really sticky and chewy so eating this brownie is an experiment in textures. Fudgey chocolate brownie, crunchy cookie filling, sticky marshmallow top and crumbly cookie crust. Yum.

I foolishly didn't get to the brownies before my husband took them to work so I didn't get a photo of the inside but I'm sure your tummy can picture it.

The brownies before the oven..

The brownies straight from the oven - look at the puffed up marshmallows!
Gooey chocolate brownies
  • 200g dark chocolate
  • 175g unsalted butter
  • 325g caster sugar
  • 130g plain flour
  • 3 medium eggs at room temperature
  • 1tsp vanilla extract
  • About 6 crushed Oreos
  • 5 digestives biscuits - crumbled into pieces and crushed for sprinkling
  • 5 marshmallows cut into pieces and kept in the fridge or freezer
  1. Preheat oven to 160c, line your tin with greaseproof paper (I used an 8" square tin for deep brownies but you can also use a standard 9x13" brownie pan)
  2. Melt butter and chocolate together in microwave. Ensure the mixture is completely combined. Remove and allow to cool slightly before adding vanilla extract.
  3. Add sugar and stir until dissolved. At this stage some people reheat the mixture until the batter is shiny and the sugar is melted as this will ensure your brownie has a shiny crust but I skipped that step on this occasion as the crushed cookies disguised the top of the brownie
  4. Add flour until incorporated then then add your eggs one at a time until completely mixed. Add in your broken Oreo/digestive cookie pieces (I crumbled mine by hand to keep some big cookie pieces). Pour mixture into your prepared tin and place marshmallow pieces on top of batter. Sprinkle top of brownie with a crushed digestive cookie to give a crumbly texture.
  5. Bake for around 25-30mins or until an inserted toothpick comes out with a few crumbs still attached. Be careful not to overbake as your brownie will set as it cools and you don't want a dry brownie!
  6. Wait until completely cold to cut into squares for a nice neat cut brownie. Store in an airtight container for up to 3 days.


  1. these look heavenly! i dont know why but ive never even tried a smore before, i guess i thought it was a no go area as a londoner aha how narrow minded. but these, they have made me want to make them immediately!

    im running a giveaway for a cookbook at the moment, be sure to have a look !

    em x

    1. I highly recommend the s'more combination Emine - it's so simple and yummy! Thanks for the heads up re: your comp, I'll take a look now :)

  2. They look amazing! I think you should host a S'mores party to show us Englanders what we're missing out on...

    1. Excellent idea as ever Miss Edwards :) Maybe a s'mores themed cake club??

  3. Wow, these look delicious, my family would enjoy this! My daughter is a big fan of marshmallows and my son can't get enough of brownies so this is the perfect treat for them.

    1. It's the perfect bake for them then! Let me know if you have a go making them, I love to hear how things turn out :)