Make the "crust" for the pie, spray round pie pan with nonstick spray
Melt 1 ½ tbsp of butter in pan
Add in 2 cups of marshmallows and stir until melted over low heat
Stir in vanilla extract
Add 3 cups of Rice Krispie cereal and stir until well coated
Take out the pan and place into pie pan around the edges
Use a measuring cup to help form the ring
Make the "pie" filling by repeating steps 2 and 3 with remaining butter and marshmallows
Stir in pumpkin spice
Stir in food coloring to your desired likeness
Add in 4 cups Rice Krispie cereal and stir until well coated
Once done add to center of pie pan and fill up
Cut a pie slice and enjoy