Ingredients
Method
- Melt the butter in a large pot over medium-low heat. Add the marshmallows and stir constantly until smooth, about 3 to 4 minutes.
- Remove the pot from the heat and stir in the peanut butter and vanilla until completely combined.
- Fold in the cereal until every piece is evenly coated.
- Press the mixture into a greased 9-inch square baking pan using buttered hands or a spatula. Let the pan sit at room temperature for about 45 minutes until firm.
- Turn the block out onto a board, slice into squares, and serve.
Notes
The cooling time is not included in the prep or cook total, so plan for about an hour of hands-off time before slicing. If you want clean squares, chill the knife blade in hot water and wipe it dry between cuts.
