Blueberry Crunch - cooking recipe

Ingredients

1 (2 oz.) can crushed pineapple (undrained)
2 to 3 c. blueberries (fresh or frozen)
3/4 c. sugar
1 box yellow cake mix
2 sticks margarine, melted
1 c. pecans, chopped
1/4 c. sugar

Preparation

Butter 9 x 13-inch baking dish.
Spread following in layers: pineapple in bottom, sprinkle blueberries over pineapple, 3/4 cup sugar sprinkled over fruits, then sprinkle dry cake mix over sugar.
Pour margarine over top of cake mix and add nuts.
Then add 1/4 cup sugar onto top.
Cook at 325\u00b0 for 35 to 40 minutes or until brown.
Serve warm or cool.
Can put Cool Whip on top, if desired.