Line a 9x13-inch baking dish with parchment paper, or lightly grease it with non-stick spray. This ensures your treats will come out easily and maintain their shape.

Place the butter in a large saucepan over medium heat. Allow it to melt, then continue cooking while stirring frequently. You’ll notice it foaming and then gradually turning a light golden brown. The smell will become nutty and toasty—this is your signal that the butter is ready. Be careful not to burn it; remove it from the heat immediately once it reaches that perfect color.

Reduce the heat to low and add the marshmallows to the brown butter. Stir continuously until they are fully melted and combined into a smooth, glossy mixture. The combination of brown butter and marshmallows is the heart of what makes these treats extra special.

Add the vanilla extract and a pinch of salt to the mixture. This step elevates the flavor, balancing the sweetness and adding depth.

Gradually fold in the Rice Krispies cereal. Stir gently but thoroughly, ensuring every piece of cereal is coated with the buttery marshmallow mixture.

Transfer the mixture into your prepared pan. Using a spatula or lightly greased hands, press the mixture evenly into the pan. Avoid pressing too hard, as you want the treats to remain light and chewy.

Allow the treats to cool at room temperature for at least 30 minutes. If you’re impatient like me, you can pop them in the fridge for 15–20 minutes to speed things up, but I personally love letting them settle naturally.

Once set, lift the treats from the pan using the parchment paper and cut into squares or rectangles. Optional: sprinkle a few flakes of sea salt or some mini chocolate chips on top for an added layer of indulgence.