- LINE a 9×13-in. pan with parchment, leaving overhang on 2 sides.
- MELT butter in a large pot over medium-high. Stir as butter foams up, then becomes nutty brown, 5 to 6 min.
- REDUCE heat to low, then quickly add vanilla, salt and marshmallows, stirring until completely melted. Remove from heat and stir in cereal until well-coated.
- PRESS into prepared pan and let cool at least 1 hour. Cut into squares.
Kitchen tip: This recipe is easily halved. Press into an 8-in. pan or stick with a 9×13-in. pan for thinner squares.
Kitchen tip: Use wet hands or a wet spatula to press mixture into pan to prevent sticking. Use the bottom of a measuring cup to evenly press the squares.
Chatelaine Quickies: Caramel skillet s'mores