Quick Answer
Single-ingredient nut butters score highest on ingredient quality. Added sugars, palm oil, seed oil blends, and hydrogenated oils lower scores significantly. Justin's and RX Nut Butter vary by flavor. Peanut butter is technically a legume, which some strict keto approaches exclude. Wild Friends and 365 Whole Foods single-ingredient options score well.
Ingredients That Matter
Not every ingredient on a keto nut butter label carries equal weight. Here is what shifts the PQ Score range up or down, and why.
Nuts or seeds (single ingredient). The base determines everything. Almonds, macadamias, walnuts, pecans, and cashews each bring different fatty acid profiles. A jar listing only "dry roasted almonds" or "macadamia nuts" starts at the top of the scoring range.
Palm oil. Added to prevent separation and create a smooth texture. Palm oil itself is not inherently low-quality, but its presence signals a formulation optimized for shelf stability over simplicity. Products with palm oil typically score 15-25 points lower than their single-ingredient equivalents.
Hydrogenated or partially hydrogenated oils. These are the biggest red flags. Even small amounts of hydrogenated soybean or rapeseed oil drop a product into the lowest scoring tiers (typically 15-30 range). Many conventional peanut butters still include these.
Added sugars. Cane sugar, honey, molasses, agave. Even 1-2 grams per serving signals a formulation that prioritizes taste engineering. Sugar drops keto nut butter scores substantially because it adds a processed ingredient to what should be a whole-food product.
Seed oil blends. Soybean oil, cottonseed oil, sunflower oil added as secondary fats. These lower scores because they introduce highly refined oils into a product that already contains adequate fat from the nut itself.
Salt. Minimal impact on scoring. A small amount of sea salt in an otherwise single-ingredient product does not meaningfully shift quality.
Natural flavors and lecithins. Soy lecithin or sunflower lecithin as emulsifiers have a small negative effect. Natural flavors are a minor deduction. Neither one tanks a score alone, but they add up alongside other additives.
What the Data Shows
According to USDA FoodData Central, plain almond butter (roasted, no salt) contains approximately 56g total fat, 6g net carbs, and 21g protein per 100g serving. Plain peanut butter shows similar macros at roughly 50g fat, 8g net carbs, and 25g protein per 100g. The macro profiles are close enough that the differentiator between products is not fat content. It is what else is in the jar.
A 2019 analysis published in the Journal of Food Composition and Analysis examined fatty acid profiles across commercial nut butters and found significant variation in oxidation markers depending on processing methods and added oils. Products with added vegetable oils showed higher peroxide values than single-ingredient counterparts. This matters for ingredient quality assessment because oxidation is a measurable marker of processing intensity.
In our scoring data, single-ingredient almond butters typically score in the 75-92 range. Single-ingredient peanut butters land at 70-88. Flavored or multi-ingredient versions of the same brands drop to 35-60 depending on what is added. The gap between "best" and "worst" within a single brand can be 40+ points.
Common Pitfalls
Assuming "natural" means single-ingredient. Many products labeled "natural peanut butter" still contain palm oil, salt, and sugar. The word natural has no regulated definition for nut butters. Flip the jar over. If the ingredient list has more than two items, it is not a single-ingredient product.
Ignoring the flavored versions. Brands like Justin's score well on their classic almond butter (typically 70-85 range). Their honey or chocolate varieties drop into the 30-50 range because of added sugars and cocoa processed with alkali. Same brand, completely different ingredient quality.
Choosing by protein content alone. Some keto dieters pick peanut butter for its higher protein per serving. But if that protein comes packaged with hydrogenated oils and sugar, the ingredient quality trade-off is steep. A clean keto nut butter with slightly less protein but zero additives scores dramatically higher.
Overlooking cashew and macadamia options. Cashew butter has slightly higher carbs (roughly 8-10g net per 2 tbsp vs 3-4g for almond). But single-ingredient cashew butter still scores well (65-80 range) because simplicity matters more than a few extra carbs. Macadamia nut butter is the lowest-carb option (2-3g net per serving) and scores in the 80-95 range when single-ingredient.
Buying "keto" branded products without checking ingredients. Some brands slap "keto" on labels and add MCT oil powder, monk fruit, collagen, and a half-dozen other ingredients. More ingredients does not equal better. A plain jar of almond butter outscores most "keto-optimized" nut butter blends.
> Want a fast ingredient check? PQ Score flags what matters in seconds. Join women in our community scanning smarter. iOS | Android
Key Takeaways
- Single-ingredient nut butters consistently score highest regardless of which nut is used. Simplicity wins.
- Palm oil and hydrogenated oils are the two most common score-lowering ingredients in keto nut butter products, dropping scores by 15-40 points depending on quantity and type.
- Peanut butter is a legume butter, not technically a tree nut butter. Strict clean keto approaches exclude it. If you include it, choose versions with only peanuts (and optionally salt) on the label.
- Flavored varieties from otherwise reputable brands often score 30-40 points lower than the same brand's plain version. Always check per-flavor, not per-brand.
- Macadamia nut butter offers the best combination of low net carbs and high ingredient quality scores, though it costs significantly more per ounce than almond or peanut options.