These Magical Rainbow Rice Crispy Treats are perfect for a surprise treat or a colorful unicorn party! This easy dessert recipe makes super chewy krispy treats full of magical charm marshmallows. Top them with rainbow sprinkles for the ultimate kid approved treat!
Prepare a 9x13 pan by lining with foil and generously greasing with butter or shortening.
In an extra large bowl, combine large marshmallows and butter. Microwave for 2-2½ minutes until marshmallows become a large blob. Remove from microwave and immediately stir in vanilla. Stir until combined and butter is completely melted.
Add crispy rice cereal and stir until half way mixed. Then add magic marshmallows and stir mixture until fully combined.
Transfer to prepared pan. Press down until crispy treats are even and firm. Top with sprinkle then gently press down to make sprinkles stick. Cover and refrigerate 2+ hours to set.
Remove treats from pan and peel off foil. Cut into 12 squares.