White Chocolate, Peanut Butter and Marshmallow Avalanche Bars

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Avalanche bars are an entirely new concept to me. I first saw a picture of these naughty little bars on pintrest, but apparently they aren’t a new thing.  The internet tells me they were originally made by an American company, the Rocky Mountain Chocolate Factory, but looking at their website I can’t find any mention of them so perhaps they’re a nostalgic treat?


For those of you who, like me, haven’t heard of these before, they are gooey, sweet little squares. White chocolate and peanut butter are melted together into a sticky puddle, then Rice Krispies are stirred through. While the mixture is still a little warm, marshmallows and milk chocolate chips are added.


Squashed into a tray it really don’t look too inviting, but once you cut it into squares you reveal the chunks of white, sticky marshmallow and  little dark chunks of chocolate mingling with the gooey white chocolaty rice krispies. I originally intended to pour more melted white chocolate on top, but when I went to the fridge I discovered my white chocolate had been nibbled away at, and I was left with nothing but an empty crumpled packet. I’m not going to point any fingers at the culprit, but there are only two of us living in this house and it wasn’t me!  I don’t think they really need that extra chocolate anyway though, they’re sweet enough without.

White Chocolate, Peanut Butter and

Marshmallow Avalanche Bars

(makes about twenty 1 inch squares)



100g white chocolate

2 table spoons peanut butter

60g Rice Krispies

30g marshmallows, cut into small chunks Or 30g mini marshmallows

50g milk or dark chocolate chips


Break your white chocolate into small chunks. Gently melt in in a saucepan over a low heat. When it’s about half melted, stir in the peanut butter and melt until smooth, stirring continuously. It will go a little cloying and tough as it melts, but keep stirring and it should sort itself out. Leave it to cool for about five minutes.

Stir in the Rice Krispies, marshmallows and finally the chocolate chips. Let them melt a little as your stir through, but stop before they lose all their shape. You’re aiming for distinct lumps of marshmallow and chunks of chocolate.

Press down into a small square tin, lined with grease-proof baking paper.

Put in the fridge to chill until completely set.

Cut into squares and dust with icing sugar.

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  1. The name of it says it all!

  2. I’ve never heard of them either, but definitely need to give them a o at some point 🙂

  3. yummy!

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