Coat the bottom and sides of an 8x8 inch baking pan with non-stick cooking spray.

Melt the butter in a large saucepan and add the mini marshmallows, stirring constantly until melted. Remove from heat.

Add the powdered lemonade mix to the melted marshmallows and stir to combine. Do the same with the Rice Krispies cereal and stir until all the cereal is coated.

Turn the mixture into the baking pan and, using a piece of wax paper, press it down firmly.

Place the marshmallow creme into a ziploc bag and cut a small hole out of one corner, creating a piping bag.

Allow the treats to cool completely, then pipe the marshmallow creme onto your Rice Krispie treats and sprinkle with yellow lemon Nerds candy.