Ingredients
- 8 ounces butter, salted or unsalted, plus extra for pan
- 1 10.5-ounce bag marshmallows
- 1 12-ounce box Rice Krispies cereal
Directions
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Line rimmed sheet pan with parchment paper or wax paper, or butter it well.
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In a large pot, melt butter over medium-low heat. It will melt, then foam, then turn clear golden and finally start to turn brown and smell nutty. Watch closely and stir often.
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When butter is evenly browned, stir in marshmallows. (If using unsalted butter, stir in 1/8 teaspoon salt.) Melt and cook, stirring often, until mixture turns pale brown, then stir constantly until lightly browned but not dark, 3 to 5 minutes.
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Turn off heat, add cereal, and mix well, preferably with a silicone spoon or a spatula. Scrape into prepared pan and press down lightly. If necessary, butter hands to press mixture flat. Let cool, and cut into squares or bars.