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1
Combine the peanut butter, rice syrup, maple syrup, instant coffee, and cocoa powder in a medium-size saucepan and cook over medium-low heat for a couple of minutes to dissolve the coffee powder and to make combining easier.
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2
Stir occasionally.
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3
Remove from the heat, add the vanilla, and stir to combine.
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4
Add the puffed grain to a large bowl, pour the wet ingredients on top, and mix well until it is coated with the sticky mixture.
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5
Add more puffed grain if you are looking for denser treats, or if the mixture looks too wet.
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6
Line an 8-inch (20-cm) square pan with parchment paper.
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7
Add the mixture and press down firmly, using more parchment paper to flatten.
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8
Chill in the refrigerator or freezer for about 1 hour, then cut into 8 pieces.
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9
Store in the refrigerator or freezer.
