Step 1

In 12-inch skillet, melt butter over medium-high heat. Add beef strips, onion and garlic; cook 7 to 9 minutes or until beef is browned.

Step 2

In 3 1/2- to 4 1/2-quart slow cooker, mix beef mixture, soup, mushrooms, salt and pepper.

Step 3

Cover; cook on low heat setting 5 to 6 hours or until beef is tender.

Step 4

Stir cream cheese into beef mixture until melted. Stir in sour cream until well blended. Serve over noodles.