Question: how much pb2 to equate to 1 tablespoon of peanut butter?
Answer: Typically, the ratio is two tablespoons of powdered peanut butter to one tablespoon of water, which yields one tablespoon of nut butter. For a larger serving, just double it to four tablespoons of the powder and two tablespoons of water and you'll still be under 100 calories for two tablespoons of nut butter.