A typical 1 cup serving of scalloped potatoes contains 7 grams of protein (2.87 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 13% of the calories in scalloped potatoes 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 105 vegetables in the database, scalloped potatoes ranks 3rd by protein per serving, and 378th out of all 796 foods on the site. Set against frozen green peas, another vegetable entry in the database, a serving carries about 1.2 g less protein (frozen green peas has 8.2 g per 1 cup cooked).
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 volume at 245 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #170038 - "Potatoes, scalloped, home-prepared with butter" (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
Scalloped potatoes protein FAQ
How much protein is in scalloped potatoes per 100 g?
Scalloped potatoes has 2.87 g of protein per 100 g. A typical 1 cup serving (245 g) provides 7 g.
Is scalloped potatoes a complete protein?
No. Scalloped potatoes 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 scalloped potatoes cover?
A 1 cup serving of scalloped potatoes contains 7 g of protein, about 14% of the 50 g reference Daily Value.
Is scalloped potatoes a good source of protein?
Scalloped potatoes is a good source of protein, and about 13% of its calories come from protein, which makes it more of an energy food than a protein food. Set against frozen green peas, another vegetable entry in the database, a serving carries about 1.2 g less protein (frozen green peas has 8.2 g per 1 cup cooked).