Grease a loaf pan with coconut oil or line with parchment paper (use a larger baking dish if serving size is adjusted higher).
In a medium pot over low-medium heat, whisk together maple syrup and peanut butter until thoroughly combined. Remove from heat and let cool, about 5 minutes.
Add puffed rice and gently mix with a spatula until evenly coated
Transfer to loaf pan and press down firmly. Freeze for 20 minutes or until firm. Slice into bars or squares and enjoy!