Prepare and bake brownies as instructed in the recipe you are using or the boxed mix. Once baked, while still slightly warm, cut circles and place on cutting board or cookie sheet. Let the brownies cool completely.

While the brownies are cooling make the frosting if you are making it from scratch. 

In a small bowl add 1/4 cup of frosting and 3-4 drops of orange food coloring and mix until fully colored.

In another small bowl add 1/4 cup of frosting and 5-6 drops black food coloring, and mix until fully colored.

Pour each color of mixed frosting into their own pastry bag. 

When the brownies are cooled spread the white frosting on top of each brownie. 

Us the black frosting pop 2 eyes and a mouth making dots with the frosting on each brownie. 

Use the orange frosting to make a carrot nose on each brownie.