2cupslucky charms marshmallows (or as many as you can find in the bag!
Line a 9x9-inch baking dish with parchment paper or spray it with nonstick spray. You can also use a 9x13 inch baking dish, the squares just won't be as thick!
In a large pot, melt the butter over low heat. Once the butter is melted and even a little browned, stir in the mini marshmallows. Stir until the mixture is creamy and the marshmallows have melted.
Turn off the heat and fold in the rice krispies. Completely mix until all the rice cereal is mixed in. Stir in 1 cup of the lucky charms marshmallows and fold them in for a few minutes. Press the mixture into the dish. I like to press it down with a piece of parchment paper so it gets super smooth on top and it doesn't stick to the spoon. Then I press the remaining lucky charm marshmallows into the top! Let them set for about an hour. Slice into squares and serve!