No-Bake Rice Krispie Treats

0 Prepare the pan: Lightly grease an 8×8-inch or 9×9-inch baking pan with butter or cooking spray. Set aside.
1 Melt the butter: Add the butter to a large microwave-safe bowl and microwave for about 20–30 seconds, until melted.
2 Melt the marshmallows: Add the mini marshmallows to the melted butter. Microwave in 20–30 second intervals, stirring well after each interval, until the marshmallows are just melted and smooth. Be careful not to overheat them.
3 Add the flavor: Immediately stir in the vanilla extract and salt until combined.
4 Add the cereal: Pour the Rice Krispies cereal into the marshmallow mixture. Gently fold with a buttered spatula until all of the cereal is evenly coated. Don't overmix.
5 Transfer to the pan: Pour the mixture into the prepared pan. Lightly grease your hands or a piece of parchment paper with butter and gently press the mixture into an even layer. Don't press too firmly, or your treats can become hard and dense.
6 Let them set: Allow the treats to cool at room temperature for about 30–45 minutes, or until set.
7 Cut and serve: Once set, cut into squares or bars with a sharp knife and enjoy!