Quick Upside-Down Cake
["3 Tbsp. butter", "1/2 c. firmly packed brown sugar", "1/4 tsp. cinnamon", "1 (15 1/2 oz.) can unsweetened pineapple, drained", "7 maraschino cherries", "1/4 c. chopped pecans", "1 pkg. yellow cake mix (without pudding)"]
["Melt butter in 10 1/2 x 2-inch cast-iron skillet.", "Combine brown sugar and cinnamon.", "Sprinkle over butter.", "Arrange 7 pineapple slices over brown sugar, reserving remaining slice for other uses.", "Place a cherry in the center of each pineapple slice. Sprinkle with pecans.", "Set aside."]
["butter", "brown sugar", "cinnamon", "unsweetened pineapple", "maraschino cherries", "pecans", "yellow cake"]