Created in the kitchens of the Palmer House hotel in Chicago in 1893, the brownie is a dessert staple in the US and beyond. Invented under the direction of Bertha Palmer, to be served at the Columbian Exposition World's Fair, the brownie quickly gained popularity – and the original is still served at the Palmer House Hilton today. The 100-year-old recipe has been widely shared online, if you'd like to give it a try at home.

Now discover 29 three-ingredient desserts that are easy to make

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Last updated by Natasha Lovell-Smith.

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