How do I calculate the number of calories per serving once I added in the 1/2 cup of oil and 1 egg?

I thought we use the calories on the dry mix per serving which would be 140 cal per brownie? I totally neglected that this didn’t include the egg and oil you need to add…

So now how much is one brownie worth? Please help!!!! I’m so frustrated trying to calculate this as I already ate the brownie.

by purpleflowercoconut

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