Grease two (4½ wide) loaf pans with butter. Set aside.
Melt the butter in a large saucepan over medium heat.
Add mini marshmallows to the pan and stir to melt and incorporate with butter.
Remove pan from heat, add the rice cereal, and mix well.
Divide the cereal mixture between the two loaf pans. Use a rubber spatula to press the cereal firmly and evenly. Set aside.
To make the "grass" place the shredded coconut into a large canning jar and add ¼ teaspoon of green food coloring. Place the lid on the jar and shake vigorously. Check the color against the green melting chocolate for similarity. Add more gel color to achieve the desired color vibrancy. There should be pops of bright green and pale green as well. Transfer coconut to a shallow bowl and set aside.
You can melt the candy wafers according to the package instructions, or use the double boiler method as in this recipe. Prepare the double boiler by adding water to a large pan that will hold two jars
Add the candy melt wafers each jar along with ¼ teaspoon of coconut oil in each one, stirring occasionally. Heat on low temp until melted and smooth.
Place Oreo cookies in a blender and blitz to create crumbs. Transfer to a small dish and set aside.
Tip the set cereal mixture out onto the work surface and cut into 2 ½” x 4 ½” rectangular pieces.
Dip one end of an 8" treat stick into the melted green candy and insert into the end of a Rice Krispies rectangle three-quarters of the way through. Set aside on wire rack as you work through all 8 pieces.
-
Using a knife spread melted green candy over one-third of the treat (front, back, and sides) at the stick end and quickly cover with green coconut.
Cover the rest of the treat with brown melted candy in the same way as the green, then quickly dip into the cookie "dirt". Use a spoon to help cover completely.
Use a small blob of remaining melted brown candy to attach the mini carrot decorations to the front "dirt" part of the treat. You can do this using a teaspoon, a toothpick, or pouring the melted candy into a food bag with the corner snipped off.
-
Place on a wire rack for the treats to set completely before serving or packaging.
To package as gifts, place each treat in a cellophane bag and tie with ribbon at the stick end.
Rice Krispies treats can be stored in an airtight container for up to 5 days.