Peanut butter, corrected.
The World's Lowest Calorie, All-Natural Peanut Butter™. Double-roasted peanuts and natural fiber, as low as 36 calories† with 7g of protein per serving.
- 36Calories† as low as
- 7GProtein
- 0GDigested fat†
- 2020Peer-reviewed study
Pick your flavor.
Same science in every jar. Different snack attack.
Protein Krispy Treat Butter
The treat you grew up on, re-engineered by the Professor. Peanut butter with crunchy puffed protein crispies: 63 calories† and 10g of protein per serving.


The Bowl O’ Gainz Krispy bundle.
Krispy Treat Butter swirled into The Flavor Gang’s Brownie Batter hot cereal. Breakfast that tastes like dessert.
Fiber binds fat. That changes everything.
Get your scientific brain on for a moment.

What you eat isn't what you absorb
Normal labels count every calorie in the food. Digestibility Corrected is an FDA term for correcting that count to the calories a food actually yields.
Fiber binds to fat
Professor Nutz is the first peanut butter with added natural fiber. It binds to fat in the gut, so more of it passes through undigested.
What lands on the label
As low as 36 calories and 0g digested fat per two-tablespoon serving, with 7g of protein. Real peanut butter taste, corrected.
E=PB²
Copycats copy labels. They can't copy a study.
Plenty of jars talk about low calories now. Ask to see their own published, peer-reviewed study. Ours is right up there.
Pencils out. Three questions, no partial credit.
Think you know peanut butter?
Q1.Two tablespoons of regular peanut butter has about how many calories?
About 190 (USDA, rounded). Professor Nutz starts at 36†.
Q2.What does "Digestibility Corrected" count?
The calories your body actually yields. It is an FDA term for correcting a label to what you digest.
Q3.What does the natural fiber in Professor Nutz do?
It binds to fat in the gut, so more of it passes through undigested.
3/3
Shop the flavorsHow to go Nutz.
Breakfast, pre-training, dessert. The Professor fits everywhere.
- Assignment 1
The protein swap
Swap an ounce of protein in any meal for a serving of Professor Nutz. Same protein, and the fiber and fat slow down the whole meal, so you stay fuller.
- Assignment 2
The cream-of-rice stack
Stir a serving into cream of rice or oatmeal. The fiber slows the release of glucose, so fast carbs become steady energy. An athlete favorite.
- Extra credit
Straight off the spoon
Dessert, solved. All the indulgence of a spoonful of peanut butter, from just 36 calories†.

“Making food magical and fun again, without the weight gain, is the mission of Professor Nutz.”
Professor Nutz was created by Joe Binley, founder of the sports-nutrition brand Project AD, as a return to his roots: a childhood on a family farm in the north of England and a deep love for food made from the earth. Double-roasted sweet peanuts, natural fiber, and a lot of science.
Joe Binley · Founder & CEO
Raise your hand. Office hours are always open.
Ask the Professor.
Is it real peanut butter?
What does Digestibility Corrected mean?
Has it been studied?
Which flavor should I start with?
How many servings are in a jar?
Class dismissed.Pick a flavor.
Seven flavors, one Professor. As low as 36 calories† and 7g of protein per serving.
†Nutritional Facts are Digestibility Corrected. Digestibility Corrected is an FDA term used to represent a correction in calorific yields from a food or macronutrient. Digestibility may vary on an individual basis.
*Comparison values for typical peanut butter are from USDA FoodData Central, rounded, for general reference only. Professor Nutz™ is a trademark of Professor Nutz LLC.







