In a slow cooker, combine the soup, beef broth, soup mix, and steak sauce. Then mix in the frozen meatballs.
Cook on low for 6 to 8 hours or on high for 3 to 5 hours.
Just before meatballs are done, cook noodles according to package directions.
Before serving, add the sour cream to the mixture and stir until combined. Serve meatballs over the cooked egg noodles along with a spoonful of ligonberry jam. Serves 6.