Melt butter. Line a baking dish or the counter with parchment paper and set aside. In a large pan melt 1/2 cup butter over medium heat. Add in 10 ounces mini marshmallows and stir until melted.
Remove from heat and add in 1/2 teaspoon vanilla and 1/2 teaspoon green food coloring. Stir until smooth. Add more food coloring until you reach your desired color and then stir in 5-6 cups cornflakes. Stir until well coated.
Shape into wreaths. Add 2 inch spoonfuls onto the parchment paper. Butter your hands and then shape into wreaths.
Place 3 cinnamon candies on one corner of the wreath. Store in a covered container for up to 5 days.
Notes
Variation: If you can't find cinnamon imperials (AKA red hots) you can use hot tamales. Simply cut off about 1/4" from each top and stick onto the wreath. You could also use red heart sprinkles.