petite sirloin steak; sliced thin:
onion; chopped: 1
mushrooms; sliced: 5
boullion cubes: 3
dry mustard: 0.5 teaspoon
ketchup: 2 tablespoons
sour cream: 1 cup
flour: 2 tablespoons
cook meat, onion, and mushrooms in a slow cooker
mix other ingredients into after meat is done
serve over egg noodles or rice