Professor Nutz Peanut Butter — 7g Protein, 4.4g Fiber, Organic Runner Peanuts

Professor Nutz Peanut Butter

Professor Nutz is organic peanut butter reformulated with added natural fiber, aimed squarely at people who want peanut butter in their diet without the calorie cost that normally comes with it.

It is made from six ingredients: double roasted runner peanuts, corn fiber, grape seed extract, sea salt, stevia plant extract and organic safflower lecithin. Seven grams of protein and 4.4 grams of fiber per serving, one gram of sugar, no added sugar.

The calorie question, explained properly

You will see two very different numbers for this product, and you should understand both before you buy.

The conventional nutrition panel reads roughly 200 to 214 calories per 2 tablespoon serving, with 16 to 17 grams of fat. That is the standard measurement, the same method used for every other food label.

The brand also publishes a digestibility corrected figure of 28 calories with 0g digested fat. Their argument is that the added corn fiber binds to fat in the gut and carries it through without absorption, so the calories present are not the calories you take in.

Here is our position. Dietary fiber does reduce fat absorption to some degree, and that is established. Whether it eliminates it, taking 16 grams of fat to zero, is a much larger claim, and Professor Nutz hedge it themselves: their site states that how much you actually digest will vary and that zero was the goal rather than the measured outcome.

If you are tracking calories, we would log this somewhere well above 28. The fiber almost certainly reduces what you absorb, so 200 is likely conservative. But building a deficit on the assumption of 28 calories a serving is how people end up confused about why the scale is not moving. Treat it as a genuinely lower-calorie peanut butter, not a free food.

We would rather tell you that than sell you a number.

Why runner peanuts

Double roasted runner peanuts are the base, and there is a reason beyond taste. Runner peanuts carry roughly 7 grams of protein per ounce, ahead of almonds at around 6 and walnuts at around 4. They also bring vitamin E, magnesium and zinc.

The peanuts are certified organic and non-GMO, and the finished product is certified aflatoxin-free. That one matters more than it sounds. Aflatoxins are toxins produced by moulds that grow on peanuts and other crops, they are one of the genuine food safety concerns in the peanut supply chain, and very few peanut butters test and certify for them.

It is fortified with RealSalt, a mineral-bearing salt rather than a purely sodium one.

Specs (per 2 tbsp serving)

Protein	7g
Dietary fiber	4.4g
Sugar	1g, no added sugar
Calories (conventional panel)	~200 to 214
Calories (brand digestibility corrected)	28
Total fat (conventional panel)	16 to 17g
Servings per jar	11
Ingredients	6
Aflatoxin	Certified free
Sweetener	Stevia plant extract

Processed on equipment that also handles egg, milk and wheat.

How people use it

• Straight, on a spoon or on toast. It behaves like peanut butter, which is the entire point.
• In oats or a shake. The added fiber gives it more body than a natural peanut butter, so a little goes further.
• In baking. It holds up in cookies and protein treats.
• Portion it anyway. Regardless of which calorie figure you believe, 11 servings a jar disappears quickly if you eat straight from it with a spoon.

Who this is for

• Anyone in a deficit who does not want to give up peanut butter, which is one of the most commonly abandoned foods when people start dieting
• People who want more fiber, since 4.4g a serving is substantial
• Anyone who wants a short, readable ingredient list
• People who care about aflatoxin certification, which is a real and under-discussed peanut issue

Who this is not for

If you want the taste and texture of a classic two-ingredient natural peanut butter, this is not that. The corn fiber changes the texture and the stevia changes the sweetness profile. Some people prefer it and some do not, and it is worth trying a jar before committing.

If you avoid stevia, note that it is the sweetener here.

If you are bulking and want calorie-dense peanut butter to help hit a target, the entire premise of this product works against you. Buy a standard natural peanut butter instead, and we will tell you that at the counter.

Stack it with: nothing in particular. This is food, not a supplement.

Frequently asked questions

How many calories are in Professor Nutz?
Two figures exist. The conventional panel is roughly 200 to 214 per 2 tbsp serving. The brand publishes a digestibility corrected figure of 28, on the basis that added fiber prevents fat absorption. If you are tracking, log it well above 28 to be safe.

Is it really fat free?
No. The panel shows 16 to 17g of fat present. The brand's claim is that the fiber prevents most of it from being absorbed, which is a different statement from the fat not being there. Their own site notes that digestion varies.

How much protein is in it?
7 grams per serving, from double roasted runner peanuts, which carry more protein per ounce than almonds or walnuts.

What is aflatoxin and why does it matter?
Aflatoxins are toxins produced by moulds that can grow on peanuts and other crops. They are a genuine peanut supply chain concern and very few peanut butters certify against them. This one does.

What is in it?
Six ingredients: double roasted runner peanuts, corn fiber, grape seed extract, sea salt, stevia plant extract and organic safflower lecithin.

Does it taste like regular peanut butter?
Close, but not identical. The added fiber changes the texture and the stevia changes the sweetness. Most people adapt quickly; some prefer a standard natural peanut butter.

Is it good for weight loss?
It is a lower-calorie, higher-fiber way to keep peanut butter in a deficit, which is genuinely useful because peanut butter is one of the first things people cut and one of the first things they miss. Just do not treat it as a free food.

Are there allergens?
It is peanut butter, so peanuts. It is also processed on equipment that handles egg, milk and wheat.