Line an 8x8" brownie pan with parchment paper both ways.
In a medium-sized mixing bowl, add the rice cereal.
In a small bowl, whisk together the protein powder, cinnamon, and salt.
In a large microwave-safe bowl, stir together the brown rice syrup, pecan butter, and maple syrup. Microwave at 20 second intervals, stirring between each one, until warm and drippy. Stir in the stevia extract, maple flavor, and butter flavor.
Stir in the protein powder mixture.
Dump in the cereal and fold together. Feel free to fold in some chopped pecans! Scoop the mixture into the prepared pan and flatten it out. Cover and refrigerate for 3+ hours. Slice, serve, and enjoy!