Cast Iron Pineapple Upside Down Cake

1 Yellow Cake Mix
3 Eggs
1 Cup of Water
1/4 Cup Vegetable Oil
1 Can Pineapple Slices in Juice
1 Jar Maraschino Cherries
1 1/3 Cup Brown Sugar
1/2 Stick Butter

Preheat oven at 350 degrees. In a medium-bowl mix together Cake mix with eggs, water, oil, and half of the Pineapple juice from can. Melt butter in large cast iron skillet over medium heat. Once butter is completely melted, sprinkle brown sugar on top without mixing at all. If you mix or touch the brown sugar into the pan it will stick. Once the brown sugar has dissolved, remove from heat and add pineapple slices and cherries into desired design. Pour cake batter over pineapple and cherries, making sure to completely cover everything. Place in oven and bake for 35-40 minutes, or until a toothpick comes out clean when poked. With a toothpick, poke holes all around bottom of cake and pour remaining juice into the holes. Immediately flip cake out onto a tray to avoid sticking - be careful, cast iron skillet will be extremely hot.