My friend gave me the recipe for this last year and the children loved it. Emily has called it Mrs. Lacoste's soup ever since. :-)
I tweaked it a bit and here is the recipe.
Cover 2 large chicken breasts with water and bring to a boil. Reduce the heat and simmer until cooked through. Reserve liquid.
Cut into bite size pieces.
Take 3 large leeks and slice.
Rinse until clean.
Mince 3 large garlic cloves. Melt a stick of butter (1/2 cup) in a large pot.
Saute vegetables until soft.
Add the reserved broth and enough water to fill the pot.
I add chicken boullion, salt & pepper to taste, and about 1 tsp. of poultry seasoning. Simmer for at least 30 minutes.
Meanwhile, cook bowtie pasta (farfalle) until done.
Place 1/2 cup of the bowties in a bowl and ladle the soup over the pasta.
I usually serve it with some sort of homemade bread or breadsticks.