Professor Nutz Old School Smooth Peanut Butter is marketed as the world's lowest calorie peanut butter — built on a genuinely simple, 6-ingredient formula (Double Roasted Runner Peanuts, Corn Fiber, Grape Seed Extract, Sea Salt, Stevia Plant Extract, Organic Safflower Lecithin) that uses natural fiber to help your body absorb less of the fat it delivers. Fiber binds to fat — everyone absorbs fat to different degrees, and what you eat alongside fat can help you digest less of it. Professor Nutz was the first peanut butter to incorporate added natural fibers that help your metabolism work better, developed over 2 years to deliver a genuine peanut butter taste and texture without the typical calorie load. Each serving delivers 7g of protein, only 1-2g of sugar, and a full panel of 30 essential vitamins and minerals. Fortified with RealSalt® and certified aflatoxin-free. Great for men and women as a snack between meals, pre-workout, or post-workout. Available in Old School Smooth (Original), Chocolate, Salty Caramel, Cinnamon Cookie Crumb, and Crunchy Peanut Butter.†
Nutrition Facts — Professor Nutz Old School Smooth (Per 2 Tbsp Serving)
Calories: approximately 200-214 (varies slightly by source)
Total Fat: 16-17g (Saturated Fat 0-2g, Trans Fat 0g)
Cholesterol: 0mg
Total Carbohydrate: approximately 6.3-6.5g
Dietary Fiber: approximately 2.4-4.4g (varies by source/flavor)
Sugar: 1-2g
Protein: 7g
Ingredients (6 total)
Double Roasted Runner Peanuts
Corn Fiber
Grape Seed Extract
Sea Salt (RealSalt®)
Stevia Plant Extract
Organic Safflower Lecithin
30 Essential Vitamins & Minerals
Certified aflatoxin-free
~11 servings per 12.4oz (352g) jar
Flavors: Old School Smooth (Original), Chocolate, Salty Caramel, Cinnamon Cookie Crumb, Crunchy Peanut Butter
Contains Peanuts
Fiber Binds to Fat — The Mechanism Behind the Lower Calorie Count
Professor Nutz's core innovation is built on a straightforward physiological principle: everyone absorbs dietary fat to different degrees, and what you eat alongside fat can help you digest less of it. Fiber binds to fat, and the Corn Fiber added to this formula binds with a portion of the peanut oil's fat content, helping that fat pass through the gut undigested rather than being fully absorbed and counted toward total caloric intake. This is why Professor Nutz can deliver a genuine peanut butter eating experience — real peanuts, real texture, real taste — while landing at a lower effective calorie count than a standard peanut butter would produce from the same fat content.†
Only 6 Ingredients — No Added Sugar, No Palm Oil, No Hydrogenated Oils
Professor Nutz keeps its ingredient list to just six components, with no added refined sugar (Stevia Plant Extract handles sweetness instead) and no palm oil or hydrogenated oils commonly found in mass-market peanut butter brands to prevent oil separation. Grape Seed Extract and Organic Safflower Lecithin serve as natural emulsifiers and antioxidants, helping maintain a smooth, stable texture without the need for more processed stabilizing agents.†
RealSalt® and Certified Aflatoxin-Free Sourcing
Professor Nutz is fortified with RealSalt® — an unrefined sea salt retaining trace minerals that standard table salt loses in processing — specifically positioned toward athletes who benefit from the electrolyte contribution. The peanuts themselves are certified aflatoxin-free, an important quality marker in the peanut category specifically, since aflatoxins are naturally occurring toxins produced by certain molds that can contaminate peanut crops; certification reflects additional testing and sourcing rigor beyond standard commercial peanut butter production.†
7g Protein Per Ounce — A Genuine Protein Contribution
At 7g of protein per ounce, Professor Nutz delivers a meaningful protein contribution for a spread typically thought of as a fat source rather than a protein source — peanuts are naturally one of the more protein-dense nuts, and this formula doesn't dilute that protein content with excessive added oils or fillers the way some lower-quality peanut butter spreads can.†
Frequently Asked Questions
Why do calorie counts vary slightly across different listings for this product?
Different retailers and product database sources show slightly different figures (ranging roughly 200-214 calories per 2-tablespoon serving), which may reflect flavor-to-flavor variation, rounding differences, or database entry inconsistencies across retailers. Always check the specific jar's label for the exact current figures.†How does the fiber actually lower the calorie count?
Corn Fiber binds to a portion of the fat naturally present in the peanuts, allowing that bound fat to pass through the digestive system without being fully absorbed — meaning fewer of those fat calories are actually available for your body to use, even though the peanut butter tastes and feels like a full-fat product.†Is Professor Nutz suitable for people avoiding added sugar?
Yes — sweetness comes from Stevia Plant Extract rather than added refined sugar, keeping total sugar content to just 1-2g per serving.†What allergens does Professor Nutz contain?
Contains Peanuts. Individuals with peanut allergies should not consume this product.†
How to Enjoy Professor Nutz Old School Smooth
Enjoy straight from the jar, spread on toast, blended into a smoothie, or paired with fruit for a snack between meals. Great pre-workout or post-workout as part of a balanced snack. Store in a cool, dry place; refrigeration may be preferred after opening depending on personal preference. Contains Peanuts. Keep out of reach of children.
Why Buy at Get Yok'd
Real-time inventory across all five Southern California stores
Available in Burbank, Glendale, Glendale Galleria, Pasadena, and North Hollywood
Authorized Professor Nutz retailer — carrying Old School Smooth alongside Chocolate, Salty Caramel, Cinnamon Cookie Crumb, and Crunchy Peanut Butter
Staff who can tell you which Professor Nutz flavors are currently in stock
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