Crockpot Beef Stroganov

A newer recipe my sister found for me.

From Center Cut Cook.

Egg Noodles cooked according to directions on package
3 pounds stew meat
1 teaspoon salt
1/2 teaspoon coarse black pepper
1 yellow onion diced
1/2 teaspoon garlic salt
2 tablespoons Worcestershire sauce
1 1/2 cups beef broth
1 tablespoon ketchup
1/3 cup flour
6-7 tablespoons apple juice or water
8 ounces sliced mushrooms
1/2 cup sour cream
corn starch for thickening if needed

Dice onions.
Place stew meat in the crockpot, top with onions and add in salt, black pepper, and garlic salt.
In a small bowl combine worcestershire sauce, beef broth and ketchup.
Whisk together until all ingredients are combined.
Then pour over beef/onion mixture.
Stir to combine.
Cook in slow cooker on low for 7-9 hours or on high for 4-5 hours
A half hour before you serve, in a small bowl combine flour and apple juice (or water) whisk well, then pour over beef mixture in the crock pot and stir vigorously.
Add in mushrooms and cook for another 30 minutes on high.
Right before serving, stir in sour cream.