Toss mini pastel marshmallows in the slow cooker and 3 other ingredients to get a sweet treat so delicious your family will be begging for more!
These 4-ingredient slow cooker spring pastel bars are the kind of easy sweet that feels like it’s been on the church potluck table forever, even if you just dreamed them up this morning. They start with a full bed of fluffy mini pastel marshmallows in the slow cooker, then melt together with graham cracker crumbs, white chocolate chips, and a bit of butter into soft, chewy, candy-like bars. It’s the sort of no-fuss recipe I’d pull out on a muddy March afternoon when the grandkids were underfoot and everyone wanted something sweet without heating up the whole kitchen. The slow cooker keeps things gentle and hands-off, and before you know it, you’ve got a pan of pastel treats that look like spring and taste like a hug.
Let the bars cool and firm up, then cut them into small squares and serve on a pretty plate or an old pie tin lined with wax paper. They’re lovely with coffee for the grown-ups and cold milk or hot cocoa for the kids. For a spring gathering, tuck them onto a dessert tray alongside fresh strawberries or orange slices to balance the sweetness. They travel well, so they’re easy to pack up for a church social, a quilting afternoon, or a little visit with neighbors—just layer the pieces between sheets of parchment in a tin or airtight container.
Slow Cooker Spring Pastel Marshmallow Bars
Servings: 16
Ingredients
4 cups mini pastel marshmallows 1 1/2 cups graham cracker crumbs 1 1/2 cups white chocolate chips 4 tablespoons unsalted butter, cut into small pieces
Directions
Lightly grease the bottom and about 1 inch up the sides of a 4- to 6-quart slow cooker crock with butter or nonstick spray. This helps the bars release later.
Spread the mini pastel marshmallows in an even, full layer over the bottom of the slow cooker. They should completely cover the bottom, like a soft pastel blanket.
Sprinkle the graham cracker crumbs evenly over the marshmallows, trying to cover as much of the surface as you can.
Scatter the white chocolate chips evenly over the top of the graham crumbs.
Dot the top with the pieces of butter, spacing them out so they can melt and moisten the crumbs and chocolate.
Cover the slow cooker with the lid. Cook on LOW for 1 1/2 to 2 hours, until the marshmallows are puffed and very soft, the white chocolate chips are glossy and mostly melted, and the mixture looks gooey around the edges. Avoid lifting the lid during the first hour so the heat stays steady.
Turn off the slow cooker. Using a heatproof spatula, gently stir and fold the melted mixture together right in the crock, pressing down to combine the marshmallows, crumbs, and white chocolate into a thick, even layer. It will be sticky—just keep pressing and smoothing it out into a flat, packed slab.
Let the mixture cool in the uncovered slow cooker for about 20 minutes, then run a thin, buttered spatula around the edges to loosen.
Line a square baking dish (about 8x8 inches) with parchment paper, letting the paper hang over the sides for easy lifting.
Carefully transfer the warm mixture from the slow cooker into the lined baking dish, pressing it firmly and evenly into the corners with a buttered spatula or clean, lightly buttered hands.
Allow the bars to cool completely at room temperature for 1 to 2 hours, or until firm enough to cut cleanly. For quicker setting, you can chill the pan in the refrigerator for about 45 minutes.
Once set, lift the slab out of the pan using the parchment paper and place it on a cutting board. Cut into 16 small squares or bars. Store leftovers in an airtight container at room temperature for up to 3 days.
Variations & Tips
For a little crunch, stir in 1/2 cup of chopped toasted pecans or walnuts when you mix everything together in the slow cooker after melting. If you like things less sweet, use only 1 cup of white chocolate chips and add a pinch of salt over the top before cooking. You can also swap half of the graham crumbs for crushed vanilla wafers for a slightly different flavor. If you prefer a neater bar, chill the pan a bit longer before cutting and wipe the knife clean between slices. For Easter or spring parties, drizzle the cooled bars with a thin ribbon of melted white chocolate and sprinkle a few extra mini pastel marshmallows on top so they look as festive as they taste. If your slow cooker runs hot, check at the 1 1/4-hour mark to be sure the edges aren’t overbrowning; every crock has its own personality, and once you know how yours behaves, you can adjust the timing to suit.
