Is peanut butter a good source of protein?

Peanut butter is a moderate source of plant protein, supplying about 7 to 8 grams of protein per two-tablespoon serving. While this makes it a helpful addition to a plant-based diet, it should not be relied upon as a primary high-protein source due to its high fat and calorie density.

Those 7 to 8 grams of protein come accompanied by roughly 190 calories and 16 grams of fat. Furthermore, peanut protein is an incomplete protein because it lacks sufficient amounts of the essential amino acid methionine. Pairing peanut butter with whole grains like whole wheat bread completes the amino acid profile, creating a balanced protein source.