A typical 1 oz serving of butternuts contains 7 grams of protein (24.9 g per 100 g), which makes it a good source of protein. That covers roughly 14% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Around 16% of the calories in butternuts come from protein, so it is more of an energy food than a protein food. It contributes to a day's protein total, but the bulk of what it delivers is energy rather than amino acids - treat it as a contributor alongside a denser source, not as the protein in a meal.
Among the 31 nuts in the database, butternuts ranks 1st by protein per serving, and 378th out of all 796 foods on the site. Set against almonds, another nut entry in the database, a serving carries about 1.1 g more protein (almonds has 5.9 g per 1 oz).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving above is measured by weight at 28 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #170570 - "Nuts, butternuts, dried" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Butternuts protein FAQ
How much protein is in butternuts per 100 g?
Butternuts has 24.9 g of protein per 100 g. A typical 1 oz serving (28 g) provides 7 g.
Is butternuts a complete protein?
No. Butternuts is an incomplete protein on its own; pairing it with other protein sources across the day covers the full range of essential amino acids.
How much of the Daily Value does a serving of butternuts cover?
A 1 oz serving of butternuts contains 7 g of protein, about 14% of the 50 g reference Daily Value.
Is butternuts a good source of protein?
Butternuts is a good source of protein, and about 16% of its calories come from protein, which makes it more of an energy food than a protein food. Set against almonds, another nut entry in the database, a serving carries about 1.1 g more protein (almonds has 5.9 g per 1 oz).