Butter or spray a 13 x 9 pan, set aside.
Melt butter in a large non-stick saucepan over medium low heat, add marshmallows and stir constantly until melted.
Remove from heat and gently stir in Crispy Rice cereal until evenly coated. Fold in 1 cup chopped chocolate sandwich cookies.
Pour mixture into buttered dish and gently press mixture evenly into dish, immediately (before marshmallows hardens) sprinkle with1/4 cup chopped chocolate sandwich cookies.
In a microwave safe bowl, melt almond bark in 30 second intervals, stirring after each interval until melted and smooth. Drizzle melted chocolate evenly over Crispy Rice treats.Cut into squares and enjoy!