01 -
In a large mixing bowl, measure out 8 cups of puffed wheat cereal and set it aside.
02 -
In a medium saucepan over medium heat, melt the butter. Once melted, add the corn syrup, granulated sugar, and cocoa powder. Stir constantly until the mixture comes to a boil. Let it boil for about 2 minutes without stirring.
03 -
Remove the saucepan from the heat and stir in the vanilla extract. Be careful as the mixture may bubble up.
04 -
Immediately pour the hot syrup over the puffed wheat cereal. Stir with a large spoon until all the puffed wheat is coated with the syrup.
05 -
Grease a 9x13-inch baking pan or line it with parchment paper. Transfer the puffed wheat mixture to the pan and press down firmly and evenly.
06 -
Allow the puffed wheat squares to cool completely at room temperature, about 60 minutes. Once cooled, cut into squares and serve.