Buttery Cinnamon Skillet Apples
["1/3 c. butter", "1/2 to 3/4 c. sugar", "2 Tbsp. cornstarch", "1 1/2 c. water", "1/4 to 1/2 tsp. cinnamon", "4 medium cooking apples, cored and cut in half (unpeeled)"]
["In 10-inch skillet, melt butter over medium heat for 3 to 4 minutes.", "Stir in sugar and cornstarch.", "Mix well.", "Add remaining ingredients.", "Cover and cook over medium heat, spooning sauce over apples occasionally, until apples are fork-tender and sauce is thickened (12 to 15 minutes)."]
["butter", "sugar", "cornstarch", "water", "cinnamon", "cooking apples"]