Line a 9x9-inch baking pan with parchment paper and lightly grease it.
In a large saucepan over medium heat, melt the butter.
Stir in the honey and peanut butter until fully melted and smooth.
Remove from heat and stir in vanilla and salt.
Gently fold in the Rice Krispies cereal until fully coated.
Press the mixture evenly into the prepared pan using a spatula.
Allow to cool completely at room temperature or refrigerate until set.
Cut into squares and enjoy!