1. Cook pasta according to package directions. Meanwhile, in a small skillet, cook bacon over medium heat until crisp. Using a slotted spoon, remove to paper towels. In the drippings, cook mushrooms for 3-4 minutes or until tender. Stir in spinach and kielbasa; heat through.
2. Remove from the heat. Drain pasta; add to kielbasa mixture. Stir in the tomatoes, olives, mayonnaise, sour cream and bacon. Yield: 1 serving.