Melt the butter in a large saucepan over low heat.

Add the marshmallows and stir until completely melted and smooth.

Stir in the green food coloring and vanilla extract.

Remove from heat and fold in the corn flakes until evenly coated.

Shape warm portions into wreath rings with buttered hands.

Press red cinnamon candies onto each wreath while still warm.

Let cool at room temperature until firm, about 15 minutes.