*I used toasted buckwheat, which gives the bars a little crunch. When I can find them, I like to use puffed brown rice cereal, which gives the bars a bit of a lighter, chewier texture. **to toast the buckwheat, preheat the oven to 350 degrees F. Spread the buckwheat in an even layer and toast for 10-15 minutes or until the buckwheat is lightly golden.