Add mini marshmallows and stir until they have completely melted and incorporated with the butter.
Remove mixture from heat and mix in the Rice Krispies.
Add ¾ cup of sprinkles and gently stir to combine.
Press the mixture into a greased 8x8 inch baking pan.
Sprinkle ¼ cup of sprinkles over the top and gently push into the treats.
Allow the treats to cool and firm up before cutting them into squares.
Video
Notes
To prevent the mixture from sticking to your hands, spray your hands with cooking spray.
For neat squares when cutting, let the treats set and spray a knife with cooking spray before slicing.
This nutritional information is approximate and was calculated using online calculators. Your nutritional information may vary depending on numerous factors.