• Line a 9x13 baking pan with wax paper, or coat with butter.

Stovetop Instructions

• In a large saucepan, melt the butter over low heat, stirring continuously. Once melted, add in the marshmallows and continue stirring until they have completely melted with the butter. Remove from stovetop.
  3 tablespoons salted butter, 4 cups miniature marshmallows
  
• Pour in the Rice Krispies and stir until they are evenly coated with the melted marshmallow and butter.
  6 cups Rice Krispies cereal
  
• Use a lightly sprayed rubber spatula, and pour the krispie mixture into the pan. Use the back of the spatula or a piece of wax paper over the treats, and press them into the pan. Allow the treats to cool and the marshmallows to set for about 30 minutes. Cut into squares and serve.
  

Microwave Instructions

• In an extra-large microwave-safe large bowl, melt marshmallows for about 2-3 minutes. The marshmallows will expand as they heat up.
  4 cups miniature marshmallows
• Once melted, remove the bowl from the microwave and stir the butter into the marshmallows. Pour in the Rice Krispie cereal and stir to combine.
  3 tablespoons salted butter, 6 cups Rice Krispies cereal
• Use a lightly sprayed rubber spatula, and pour the krispie mixture into the pan. Use the back of the spatula or a piece of wax paper over the treats, and press them into the pan. Allow the treats to cool and the marshmallows to set for about 30 minutes. Cut into squares and serve.