Iron Skillet Pineapple Upside-Down Cake
["20 oz. can sliced pineapple", "1/4 c. butter", "2/3 c. brown sugar, firmly packed", "maraschino cherries", "1 1/2 c. flour", "3/4 c. sugar", "1 1/2 tsp. baking powder", "1/2 tsp. salt", "1/2 c. milk", "1/4 c. shortening", "1 egg", "1 tsp. lemon juice", "1 tsp. vanilla", "1/4 tsp. grated lemon peel", "2 Tbsp. pineapple syrup"]
["Drain pineapple; save 2 tablespoons syrup.", "Melt butter in 10-inch cast-iron skillet.", "Stir in brown sugar until blended. Remove from heat.", "Arrange pineapple slices in sugar.", "Place a maraschino cherry in center of each slice."]
["pineapple", "butter", "brown sugar", "maraschino cherries", "flour", "sugar", "baking powder", "salt", "milk", "shortening", "egg", "lemon juice", "vanilla", "pineapple syrup"]