Directions

1. In a very large bowl, combine the Cheerios, the Crispix, the Rice Krispies, the peanuts, and the M&Ms. Mix thoroughly.
   
2. In a large saucepan, combine the corn syrup, butter, white sugar, brown sugar, and peanut butter.
   
3. Bring to a boil and cook for several minutes, stirring continuously for 3 to 5 minutes. Add the vanilla.
   
4. Pour the sugar/syrup mixture over the cereal mix, and mix well. This takes a while.
   
5. Spoon the mixture over a greased 15x10 baking sheet and press it flat with a piece of aluminum foil.
   
6. Sprinkle lightly with coarse sea salt and allow to thoroughly cool.
7. When it's completely cool, cut into bars.