Cookie Butter Rice Cereal Treats

1/4 c butter

3/4 c cookie butter (e.g.,Trader Joes Speculoos or Biscoff)

10 oz (5 1/2-6 cups) miniature marshmallows

7 c crisp rice cereal

Grease a 9" square pan. Heat butter and cookie butter in a large dutch oven until melted. Add marshmallows and stir until melted. Stir in rice krispies. Press into prepared pan. Cool completely then cut into squares.