3. Seitan
Seitan is a vegan meat substitute made of hydrated gluten, the main protein found in wheat. It is high in protein and minerals while is low in fat and carbs. Also, seitan contains roughly the same amount of protein as animal meat—that’s why it’s a great protein option for many people.
4. Walnuts
They are low in carbs and most of which consist of fiber. Walnuts are also great sources of several minerals and vitamins such as copper, phosphorus, folic acid, Vitamin B6, manganese and Vitamin E. Even if they aren’t so high in protein like seitan or soy, walnuts have many health benefits, so you should add them into your diet.
5. Amaranth
It’s a great protein source and is naturally gluten-free, which makes it a great choice for people who are celiac or gluten intolerant. Also, amaranth contains calcium, magnesium, potassium, phosphorus, and iron. One cup of uncooked amaranth has 31 percent of the RDA for calcium, 14 percent for vitamin C, and a whopping 82 percent for iron.