Fruity Pebbles Ice Cream Treats

Grease a medium sheet pan. In a large saucepan over low heat, melt butter. Once completely melted, add marshmallows. Stir until completely melted and smooth. Remove from heat and quickly stir in Fruity Pebbles until well coated. Using wax paper or spatula, press mixture into sheet pan until about 1/2" thick. Let cool at least 20 minutes. Using a cookie or biscuit cutter, punch out 8 circles. Place 1 big scoop of vanilla ice cream in between two krispie circles. Press down. Repeat to make 3 more sandwiches. Freeze until ready to serve.