Pineapple Upside-Down Cake

The recipe is from The All-New All-Purpose Joy of Cooking, I made it with the extra butter and brown sugar, and I'm specifying dark brown sugar, because it rocks. Pineapple Upside-Down Cake Preheat the oven to 350 F. Drain and place on paper towel to absorb excess juice: 7 rings of pineapple (there is more than enough in one 20 oz. can) Take a 9" cast iron skillet, or a 9" cake pan, and melt 6 Tb butter in it. (If you are using the skillet, you can do this on the stovetop over very low heat, for a cake pan, you can pop the pan in the oven for a minute to melt the butter.) Tilt the pan so that the butter coats the sides, and sprinkle evenly over the top: 1 cup packed dark brown sugar Arrange the pineapple slices with one in the center of the pan, and the rest surrounding it. Place maraschino cherries (you need at least 13, but more around the edges of the pan is nice, too), rounded side down, in the centers of the pineapple rings, and between them as well. In a small bowl, whisk together and set aside: 2 eggs 2 Tb buttermilk 1/2 tsp vanilla In a large bowl, mix for a few seconds with an electric mixer: 1 cup flour 3/4 cup sugar 3/4 tsp baking powder 1/4 tsp baking soda 1/4 tsp salt Add: 6 Tb butter, softened 6 Tb buttermilk Beat on low speed until the mixture just comes together. Mix on high speed (assumiing a hand mixer is used) for a minute and a half. Add 1/3 of the egg mixture at a time, beating for 20 seconds and scraping the sides of the bowl each time. Scrape the batter over the pineapple in the pan, and spread evenly. Bake for about 35 minutes, or until a toothpick inserted in the center of the cake comes out clean. Let the cake cool for a few minutes before continuing. Now, here's the tricky part. With your hands protected by oven mitts ***CAREFULLY*** place a platter on top of the pan, and invert the pan, so that the "top" of the cake is now on the bottom of the platter and the pineapple and cherries are shining on top in a glory of brown sugar and butter. This is what happpens if you are not careful: I should have known better than to try this with my favorite plate. Anyone know where I can get a cobalt-blue glass plate like that?