Line a small (4-5 inch) square pan or loaf pan with parchment paper. Set aside.
In a small saucepan over low heat, stir together the maple syrup, coconut or cashew butter, and refined coconut oil until fully melted and smooth.
Remove from heat and stir in the lemon juice and zest.
In a medium bowl, or in the saucepan, combine the brown rice crispies with the lemony coconut mixture. Stir gently until fully coated.
Press mixture evenly and firmly into the prepared pan.
For the topping, melt white chocolate with coconut oil, then spread over the bars. Finish with a sprinkle of lemon zest.
Chill in the fridge for 30–45 minutes or until firm. Slice and enjoy!