Measure exactly 10 cups cereal and add to a large bowl. Set aside.

Line a 13 x 9" baking pan lined with aluminum foil. Then sprayed. Set aside.

Melt butter over low heat in a large pot. Once butter is melted. Add all but 2 CUPS Marshmallows. Vanilla , salt.cook over Low heat until completely melted. Once mixture is smooth. Add remaining 2 cups Marshmallows and stir just until incorporated. ( Marshmallows will mostly melt but those lumps that are left are going to add little pockets).