Super Simple Marshmallow Slice

If I can make this Marshmallow Slice, then so can you …

In my never ending journey to find the easiest, most simple, recipes around, I accidentally created my own marshmallow slice recipe. Now don’t get me wrong – I’m sure this recipe is out there somewhere on the internet; but for me, it’s one I just made and it’s super basic.

All you need are pantry staples, some jam and some marshmallows … that’s right – no making your own marshmallow. Because honestly who has time for that nonsense.

I used my Thermomix TM6 to make this, but you can use a food processor, a mixer or even make by hand.

TIP: you can make this gluten free by simply substituting the gluten ingredients for gluten free ingredients.


  • 100 grams softened butter (cut into cubes)
  • 100 grams white sugar
  • 1/4 teaspoon baking powder
  • 1/2 teaspoon vanilla essence
  • 1 egg
  • 200 grams flour
  • 4 tablespoons jam
  • 450-500 grams marshmallows


  1. Preheat your oven to 170 degrees celcius (340 f), and line a 30x20cm baking tin
  2. Add the butter and sugar to a mixing bowl and mix until light and fluffy.
  3. Add in your baking powder, vanilla essence, egg and flour
  4. Mix to combine
  5. Tip into your prepared tin, and using the back of a spoon, press down and spread to the corners of the tin.
  6. Pop into the oven for 10 mins, or until it’s just starting to brown.
  7. Remove the cooked base from oven and let cool for 10 minutes.
  8. Reduce oven heat to 150 degrees celcius (300 f)
  9. Next, add tablespoons of the jam onto the base, and spread around to create an even layer.
  10. Finally, add the marshmallows onto the top. They do not need to be perfectly next to each other – as it cooks the marshmallows will expand.
  11. Pop into the oven for about 10 minutes
  12. Once removed, use the back of a spoon to gently press the marhmallows down (if they need to be closer together).
  13. Let it cool to room temp and then pop in the fridge.



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