Ingredients
Equipment
Method
Prepare pan
- Line a 9x13 pan with parchment paper and spray lightly with cooking spray so the bars lift out cleanly.
Melt marshmallows
- Melt butter in a large pot over medium-low heat, then add marshmallows and stir constantly until fully melted and smooth, about 8-10 minutes, with the mixture glossy.
Stir in caramel and flavor
- Remove from heat and stir in caramel sauce, vanilla extract, and salt until combined, with no streaks remaining.
Fold in cereal
- Fold in Rice Krispies cereal quickly until evenly coated, with every flake clinging to the marshmallow mixture.
Add extra marshmallows
- Fold in the extra 1 cup mini marshmallows for gooey pockets, then press the mixture together briefly so it stays cohesive.
Press into pan and set
- Press the mixture into the prepared pan using buttered hands, pressing firmly but not too hard to keep the bars chewy.
- Drizzle generously with additional caramel sauce and immediately sprinkle with flaky sea salt, then let set 30 minutes until firm enough to cut.
Cut and serve
- Cut into 16 bars after the 30-minute setting time, aiming for clean edges and visible stretchy marshmallow pull.
Notes
Pro tip: Work quickly after folding in the cereal so the bars stay thick and chewy—if the mixture cools too much, warm it just until spreadable. Store airtight at room temperature up to 3 days or refrigerate up to 5 days; freeze up to 1 month. For a dietary swap, use dairy-free butter and dairy-free marshmallows (check labels) to keep the same gooey texture.
