Pineapple-Apple Crunch
["5 medium apples, peeled, cored and sliced", "1 small can crushed pineapple", "3 Tbsp. cornstarch", "1/2 tsp. salt", "1/4 tsp. cinnamon", "2 Tbsp. butter"]
["You will need a buttered baking dish."]
["apples", "pineapple", "cornstarch", "salt", "cinnamon", "butter"]