Line a baking sheet with parchment paper or wax paper.

Place the marshmallows and butter in a large microwave safe bowl.  Then microwave in 30 second intervals, stirring between each interval until the mixture is completely melted and well combined. Then stir in the vanilla extract.

Add in the green gel food coloring until you receive a bright vibrant green color.

Gently stir in the cornflakes cereal until the cereal is well coated with the marshmallow mixture.

Then scoop spoonfuls of the mixture into the baking sheet.  Then spray your fingers with a non-stick cooking spray and use your hands to form a hole in center of each clump to form a wreath shop.

Use the red hots to decorate the wreath.

Then allow them to cool completely until the cookies are firm and then serve!