Step 1

Line a 9-inch square baking dish with parchment paper. Set aside.

Step 2

In a large saucepan, melt butter over medium heat. Once melted, add in all but 1 cup of the marshmallows. Reduce heat to low and continue stirring until completely melted.

Step 3

Remove from heat and stir in the vanilla. Add the cereal and the remaining 1 cup of marshmallows.

Step 4

Pour into the prepared baking dish. Press GENTLY with your fingertips just until completely spread out (the harder you pack them in, the harder they are to eat).

Step 5

Allow to set, about 1 hour. Cut and enjoy!