Crock pot Beef Tips with Mushroom Gravy

INGREDIENTS

1/3 cup

flour

6 tbsp

water

2 lb

stew meat (or a 3-pound chuck roast, cubed by your butcher)

1 tsp

salt

1/4 tsp

black pepper

medium, diced onion

1/4 tsp

garlic salt

1 tbsp

Worcestershire sauce

1 1/2 cups

beef broth or stock

1 tbsp

ketchup

4 oz

sliced mushrooms (can or fresh), optional frozen in a quart size bag

1/2 cup

light or regular sour cream or half and half {save for the last cooking hour}