Prep the pan: Line a 9x13-inch baking pan with parchment and lightly butter the paper so bars lift out easily.
Melt the butter: In a large pot over low heat, melt 4 tablespoons butter. Keep the heat low to prevent scorching.
Add marshmallows: Stir in 6 cups mini marshmallows with a pinch of salt.
Keep stirring until smooth and glossy. Remove from heat and stir in 1/2 teaspoon vanilla.
Fold in cereal: Add 6 cups crispy rice cereal and gently fold to coat. Don’t crush the cereal; use broad strokes.
Press and set: Scrape into the pan.
Lightly butter your hands or a spatula and press into an even layer without packing too tightly. Top with 1/2 cup mini marshmallows or sprinkles if you like. Let set 30 minutes, then slice.
Make the crust: Crush graham crackers into fine crumbs (about 1 1/2 cups).
Mix with 3 tablespoons melted butter and a pinch of salt. Press into an 8x8-inch lined pan.
Melt the chocolate: In a heat-safe bowl, microwave 1 1/2 cups chocolate chips in 20-second bursts, stirring until smooth. Stir in 1 tablespoon butter for shine.
Stir in marshmallows: Fold in 2 cups mini marshmallows.
Spread over the crust. Sprinkle a few extra cracker crumbs and a pinch of flaky salt on top.
Chill and slice: Refrigerate 1 hour until set. Lift out and cut into squares.
For a toasted effect, briefly torch the top marshmallows or broil for 20–30 seconds before chilling.
Prep a sheet: Line a baking sheet with parchment.
Melt and mix: In a pot over low heat, melt 2 tablespoons butter. Add 2 cups mini marshmallows and stir until smooth. Remove from heat and stir in 1/2 teaspoon vanilla and a pinch of salt.
Fold add-ins: Add 2 cups roughly crushed pretzels and 1/2 cup chocolate chips.
Mix quickly.
Form clusters: Drop spoonfuls onto the sheet. Press a pretzel piece on top for crunch. Let set 20–30 minutes.
Beat together: In a bowl, whip 1 cup marshmallow creme with 4 ounces softened cream cheese until smooth and fluffy.
Serve: Add a splash of vanilla or citrus zest if you like.
Serve with strawberries, apple slices, or graham crackers.