Prepare the marshmallows cream:Melt the butter and marshmallows in a medium saucepot. Remove from heat and stir in the peppermint extract.
Divide this mixture into three parts. Transfer each portion into a separate mixing bowl.
Gently fold in red and blue color into each bowl and mix well till the color is even.
Prepare the Krispies mixture:Mix 2 cups of cereal into each of the three bowls containing marshmallow cream. Spray an 9x13 baking pan with nonstick cooking spray
First, transfer the blue Krispies mixture into the 1/3 of pan. Use a spatula to press it it down.
Repeat with the white and red mixtures. Leave it to sit for an hour. After it has set completely, remove it from the pan. Use a sharp knife to cut it into square pieces.
Decorate with sprinkles. Your red, white, and blue Rice Krispies treat is ready to serve. Enjoy!