1 (10.75 oz.) can condensed cream of mushroom soup
1/4 cup all-purpose flour
Lightly grease slow cooker and line with dried beef. Place 2 to 3 chicken breasts in slow cooker. Combine sour cream, soup and four in medium bowl and mix together; pore 1/2 of mixture over chicken. Top with some dried beef, add the remaining chicken breasts and pour in the remaining mixture. Top with the rest of the dried beef. Cook in slow cooker on low for 8 hours, or on high for 4 hours.