Melt the butter in your iron skillet with the burner on medium high heat. Once the butter is melted, remove from heat and top it with the brown sugar
Place the Pineapple slices on top of the butter and brown sugar mixture. Create your own pretty pattern with whole and cut slices.
Place the cherries into the center of each Pineapple slice and any other spot you choose.
In a large mixing bowl, pour the cake mix and stir with whisk to remove lumps in the dry batter.
Pour the reserved juice from the Pineapple Slices can into your 2 cup measuring cup. Add water to the juice until you reach 1 1/3 Cups
Add eggs, oil and juice. Mix on high about 30 seconds then reduce to medium speed and mix 2 minutes stopping occasionally to scrape the sides and bottom of the bowl.
Pour the batter over the Pineapples in the iron skillet filling the pan about 2/3 full.
Bake at 350° about 30-45 minutes until golden brown or toothpick inserted into center comes out clean.
Cool in pan about 10 minutes before inverting onto serving platter.