Preheat oven to 350 degrees. Line cookie sheets with parchment paper.
In a mixing bowl, stir together cooled melted butter and brown sugar. Beat in the egg and vanilla.
In a medium bowl, stir together the flour, baking soda, baking powder, salt, and cereal. Stir flour mixture into egg/butter mixture until just combined. Add remaining ingredients, mix until combined.
Using a medium cookie scoop or about 2 tablespoons of dough each, scoop into balls and put on two parchment lined baking sheets.
Bake 12-14 minutes or until lightly brown on edges but still soft in the middle. Cool 2 minutes on cookie sheets and then remove to wire racks to cool completely.