01 -
Line a 9x9 inch pan with parchment paper, leaving overhang on two sides. Lightly grease the parchment and a silicone spatula with butter or cooking spray.
02 -
In a large pot over low heat, melt the butter. Add 8 cups of the mini marshmallows and stir until just melted and smooth, about 3-4 minutes.
03 -
Remove the pot from the heat. Stir in the vanilla extract and fine salt until evenly mixed.
04 -
Add the crisp rice cereal and Fruity Pebbles. Fold gently until the cereal is coated, then fold in the remaining 2 cups mini marshmallows for soft pockets.
05 -
Scrape the mixture into the prepared pan. Press it into an even layer with the greased spatula, using light pressure so the bars stay chewy.
06 -
Sprinkle extra Fruity Pebbles on top if using. Let cool at room temperature for about 45 minutes, then lift out and cut into 16 squares. Drizzle with melted white chocolate if desired.