Another classic I've never tried: pea soup. It's another super easy one. Here goes:
In a large soup pot, saute 2 chopped leeks with 2 tablespoons of butter. Once they are softened, add 4 cups chicken stock. Bring to a boil and add 1 bag of frozen peas. Wait 3 minutes, so the peas cook, and take off the heat. Add salt, pepper, and 1/2 cup chopped fresh mint. Using a hand held blender, puree the mixture. Wisk in 1/3 cup creme fraiche.
Gotta love that bold green color!