Brownie Marshmallow Cupcakes (aka Mississippi Mud)

If you have ever had this cake, you know how yummy, wonderful, and delicious it is. It is one of my all time favorite cakes. It's an old recipes from when I was a child (a long long time ago) and it honestly doesn't take long to make. Many people call it a Mississippi Mud Cake which is how my recipe is titled. I have had it many times in sheet cake form but I wanted to try it in cupcake form. It turned out perfect and it's a much less messy way to eat it.