I am starting to get more orders in. I mostly only use cake box extender recipes which everybody seems to love. I have tried to do some recipes from pure scratch and they usually turn out too dry. So far I have only offered Chocolate, Vanilla, Red Velvet, Lemon flavors. But I did have to do White Chocolate, Chocolate Oreo and Orange Creme once which I fear may have been too dry since they were from complete scratch.

Anyways, I was just wondering if there were some other basic flavors and fillings that I should definitely offer? I would like to stick to cake extender recipes. Any links are greatly appreciated. I find that when people try to type up a recipe on here there are usually some left out ingredients or questions that come up. 

Thanks in advance!

You may want to try your hand at scratch baking again. Just try baking for a little less time. Your problem might just be over baking. 

There are a lot of recipes online for different cakes. If you use boxed mixes, check out their websites. Betty Crocker has some really neat recipes that are good for inspiration. 

I bake from scratch, but I love to go see what those websites have as ideas. It really depends on how much you want to do with your flavor combinations. I do all sorts of stuff like mint chocolate chip, salted caramel, mocha, Kahlua, maple, pumpkin spice, pink lemonade, etc... 

I usually try to have seasonal flavors along with classics everyone likes.