I forgot to put the butter in my cake...

I used
cake mix
1 cup sour crm
1 cup flour
1 cup sugar
3 eggs
1 1/4 cups water

It came out of the pan beautifully.. But what is it going to taste like

I got through baking before I noticed the butter still sitting on the counter beside the oven...

Thanks

How much butter does the recipe call for? Not much, I assume. If it's only a few tablespoons, the cake will be fine!