Great tasting low-sugar blueberry muffins or cake! Easy, tasty, delicious! What more could you ask for?? And to be even more great, you can substitute any kind of berry in this! This recipe uses regular bagged Splenda and regular sugar. If you use Splenda for baking, just use 3/4 cup Splenda for baking in the cake and 1/2 cup Splenda for baking in the topping.