1 box cake mix (yellow or white)
1 (8 oz.) pkg. cream cheese
1/2 c. oil
3 eggs
1 (15 oz.) can blueberries, drained (or 2 c. fresh blueberries)

Mix, adding berries last. Bake at 350 degrees for 1 to 1 1/2 hours in 10-inch tube pan.