Tip for freezing soup

I made that wild rice soup the other day (YUM) but it was too much for my little family to eat.  I wanted to freeze it for later, but hate de-thawing a giant lump of soup.  So I poured the cooled soup into muffin tins and let it freeze overnight.  In the morning I put the bottom of the muffin tins in hot water and the soup popped right out. Then I put these frozen circles of soup on a freezer bag and then later when you want them you just throw three or four circles in the microwave!  It freezes really well and should last about 6 months that way.