Make Peeps Rice Krispies Treats Recipe for chewy, pastel rice krispie squares—easy, festive, and perfect for sharing.
Place the butter in a large saucepan over very low heat and let it melt slowly until it becomes glossy and fragrant, stirring occasionally so it warms evenly and the edges just begin to shimmer. Keep the heat gentle so the butter simply liquefies without browning, the first gentle transformation that sets the base for the treats.
Add the marshmallows to the melted butter and stir continuously with a heatproof spatula. Keep the motion steady and patient, coaxing the marshmallows into a smooth, silky molten mass; watch the texture change from pillowy solids into a viscous, glossy syrup that pulls into soft strands.
Take the saucepan off the heat once the marshmallows are completely melted and uniform. The mixture should be thick, shiny and slightly elastic—cooling just enough to be workable while still warm and tacky.
Quickly fold the chopped Peeps marshmallow candies into the warm marshmallow mixture so the pastel pinks, yellows and purples streak and soften but retain little specks of color and texture. The Peeps will partially melt and bead into the glossy matrix, creating tiny pockets of softer, cloud-like marshmallow texture.
Pour the Rice Krispies cereal into the molten marshmallow-Peeps mixture and gently fold until every flake is evenly coated in the shiny, sticky binder. Work deliberately to preserve the airy puff of the cereal while achieving an even, clingy coating that binds the whole mixture together.

Transfer the warm mixture into a greased rectangular 9x13 inch pan and, using a buttered spatula or a sheet of wax paper, press the mass evenly into the corners and edges. Apply even pressure to compress without crushing—aim for a cohesive, uniform surface with visible puffed-rice texture and faint pastel flecks.
If you like, scatter additional whole or chopped Peeps on top and press lightly so they adhere; they should sit as soft, pastel confetti atop the glossy surface, adding playful color and tiny marshmallow domes.
Allow the pressed tray to cool at room temperature for about thirty minutes until the mass firms up and becomes sliceable—still slightly tacky but holding its rectangular shape, the edges clean and the surface gently matte where it contacts air.
Run a sharp knife along the pan to slice the set treats into squares, lifting them out to reveal sticky, chewy interiors studded with puffed rice and pastel Peeps bits; arrange for serving and enjoy the contrast of glossy marshmallow, crunchy cereal and soft Peeps.
