Melt the Unsalted Butter (3 tablespoon) in a large pot over medium heat.
Stir in the Marshmallow (16 ounce) until melted.
Remove the pot from the stove and stir in Bird Pick® Matcha Green Tea Powder (1 1/2 teaspoon), Vanilla Extract (1 teaspoon), and Salt (1/4 teaspoon).
Stir in Rice Krispies® Cereal (3 1/2 cup).
Spread into a greased pan and allow to cool before cutting into squares.