Pineapple Blueberry Crunch Cake
["1 (20 oz.) can crushed pineapple with juice", "1 pint of blueberries", "3/4 c. of sugar", "1 box of yellow cake mix", "1/2 c. butter, melted", "1 c. chopped pecans", "1/4 c. sugar"]
["Preheat oven to 350\u00b0."]
["pineapple", "blueberries", "sugar", "cake mix", "butter", "pecans", "sugar"]