1 stick butter
2 10 ounce bags small marshmallows
1 12 ounce box Rice Krispies (12 cups)
Optional 1 t vanilla
Melt butter in heavy bottom pan over medium low heat. Continue heating butter, stirring constantly, until browned - foamy with dark bits. It will start to smell caramely. Dont over cook it, it will burn and taste bitter.
Add marshmallows and stir until mostly melted. If you want you can keep 1/2 c marshmallows to stir in with the Rice Krispies so it’s not all melted.
Turn off heat and add vanilla, then Rice Krispies. Stir well.
Layer a 9x13 pan with wax paper. Press Rice Krispies into the pan. Use clean, damp hands to press down gently.