Here is a recipe I discovered by accident online. It is quick, easy, moist and yummy!
Cake:
1 box or package of blueberry muffin mix (I used Jiffy)
3/4 c. fresh or frozen whole blueberries
1 8 ounce can of crushed pineapple with juice
1 egg
Topping:
1/2 flaked coconut
1/3 cup brown sugar
2 T soften butter
1 T flour
Preheat oven to 350 degrees. Rinse blueberries in cold water and drain. Mix all ingredients of topping in a small bowl and set aside. In another bowl, add muffin mix, pineapple and egg. Blend well by hand. Fold in blueberries. Pour batter in a 9x9 square pan that you have sprayed with cooking spray. Sprinkle topping on batter. Bake for 25-30 minutes until toothpick inserted in middle comes out clean.