Turn the heat off and pour in the vanilla extract then stir. Pour the crisp rice into the saucepan in two stages. Vigorously stirring each time so that the rice is coated in marshmallows.

Let ATK crispy rice treats cool for 15 minutes. Using the foil overhang, remove treats from pan. Cut into 16 squares and ...

Remove the bowl from the heat, add the crispy rice cereal and fold until coated ... preferably overnight. Cut into squares while still in the tin, then remove from the tin, pile onto a plate ...