1) In 3-quart saucepan, saute bacon until almost crisp.
2) In a cup, pour the drippings; return 1 tablespoon to saucepan; discard rest.
3) Add frankfurters, onion, and thyme; cook over high heat until frankfurters are browned for 2 to 3 minutes.
4) Remove pan from heat.
5) Add soup; let it boil.
6) Lower the heat; cover the pan and simmer for 5 minutes.
7) Top each serving with a spoonful of sour cream and bacon.
8) Sprinkle parsley and serve.