No Pudge Brownies Calories

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I made the single serve brownie according to the box which uses:

2 tbsp brownie mix
1 tbsp fat free vanilla yogurt

The box says that there are 12 servings when it comes to the nutritional facts I am confused.

There seems to be more than 24 tbsp of dry mix so I don't understand how when you make the single serve its is considered a regular serving when it comes to the calories, etc.

Has anyone tried to figure it out?

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