This came from one of my favorite blog spots, bakeorbreak. http://www.bakeorbreak.com/recipes/2007/12/15/corn-flake-bars/
These combine my favorites: cereal and peanut butter. They're a quick dessert if you need something in a hurry.
1/4 cup brown sugar
1/2 cup light corn syrup
1 tsp. vanilla extract
3 cups crushed corn flakes
Combine the brown sugar and corn syrup in a large saucepan over medium heat. Bring to a boil. Remove from heat and stir in vanilla and peanut butter. Fold in corn flakes until well mixed. Spread into a 9x13 inch pan. Chill until set and cut into squares.