Nuts, seeds (eg. sesame seeds) and hard seeds/kernels (eg. almond) can be used as a meat substitute. They contain, in general, among other things, the vitamins B1, B2, B6 and E and the minerals, folic acid, magnesium, calcium, zinc and potassium. 
As the table shows, the nuts contain a lot of fat. That in itself is not bad, because nuts contain little “unhealthy” saturated fats and lots of healthy, unsaturated fats. (“Unhealthy” is a relative term, because there are nutritionists that indicate that we also need saturated fats.)
Advantage: Nuts are durable and do not require refrigeration.
Origin: Nuts that grow most in Europe are: Walnuts, hazelnuts, almonds and chestnuts. However, chestnuts are low in fat and protein, so it is rather like a potato or rice substitute. Peanuts and cashew nuts need to be imported, but still have “only” an indirect energy value (fossil fuel use) equal to brown beans in glass.
||Origin||Fossil fuel use
|Peanut||Most peanuts from China.||≈ Brown beans in glass|
|Cashew||Mainly from India and Vietnam.|
|Walnut||Are imported from France and California.|
Source: Milieueffecten van Nederlandse consumptie van eiwitrijke producten, Blonk Milieuadvies, oktober 2008, H.Blonk, B. Luske, A. Kool, page 30
Use: Nuts are delicious in salads, as a snack, in pies, in a nut citizen or nut oils. Nutpaste is a tasty alternative to bread. In health food stores you can find a wider range than the well-known peanut butter.
The Nutrition Center recommends the following amount: Adults can replace a portion of meat from 100 grams to 40 grams of nuts. For children aged 4-12 years is 25-40 grams.