Simple Crock Pot Beef Stroganoff

Name: Simple (Crock-Pot) Beef Stroganoff
Ingredients: 2 lb beef stew meat; 2 Tbsp cooking oil; 2 1/2 c sliced fresh mushrooms; 3/4 c sliced green onions or 1 med chopped onion; 3 clove fresh garlic, minced; 1 tsp dried oregano (crushed); 1/2 tsp dried thyme (crushed); 1/2 tsp salt; 1/2 tsp black pepper; 1 bay leaf; 2 1/2 c beef broth, reduced sodium; 2/3 c red cooking wine; 1 1/2 c light sour cream; 1/4 c cold water; 3 Tbsp cornstarch; sprig(s) fresh parsley (optional)