Ingredients
Equipment
Method
Prep the pan
- Line a 9x13 pan with parchment paper and spray lightly with cooking spray so the bars release cleanly.
Melt and combine
- Melt butter in a large pot over medium-low heat.
- Add mini marshmallows and stir constantly until fully melted and smooth, keeping the mixture glossy.
- Remove from heat, then stir in caramel sauce, vanilla extract, and salt until evenly combined and thick.
Fold and press
- Fold in Rice Krispies cereal quickly until evenly coated.
- Fold in the extra 1 cup mini marshmallows for gooey pockets that stay stretchy.
- Press the mixture into the prepared pan using buttered hands, pressing firmly but not too hard to keep the bars chewy.
Finish and set
- Drizzle generously with additional caramel sauce, letting some pool slightly on top.
- Immediately sprinkle with flaky sea salt while the top is still glossy.
- Let set at room temperature for 30 minutes before cutting into 16 bars.
Notes
For the stretchiest, chewiest bars, press firmly but avoid compacting too hard—any extra force can make them more firm. Store covered in the refrigerator up to 5 days; freeze up to 2 months. For a gluten-free swap, use a gluten-free crispy rice cereal while keeping the caramel sauce and marshmallows the same.
