Creating Beef Stroganoff Stew can be straightforward if you follow these steps:

1. Prepare Ingredients: Begin by prepping all the vegetables and cubing the beef stew meat.
2. Brown the Beef: In a large pot, heat olive oil over medium-high heat. Add the beef cubes and season with salt and pepper. Brown the meat for 5–7 minutes.
3. Sauté Onions and Garlic: Add the diced onion and minced garlic to the pot. Sauté for another 2–3 minutes until the onions are translucent.
4. Add Mushrooms: Stir in the sliced mushrooms and cook for an additional 5 minutes, allowing them to brown slightly.
5. Incorporate Vegetables: Add the carrots and potatoes to the pot, stirring everything together.
6. Add Liquid Ingredients: Pour in the beef broth, Worcestershire sauce, and Dijon mustard. Stir to combine.
7. Simmer the Stew: Bring the mixture to a boil. Then, reduce the heat to low and cover the pot. Let it simmer for about 1 hour, until the beef and vegetables are tender.
8. Thicken the Stew: In a small bowl, whisk the flour with a little water to form a paste. Stir this mixture into the pot to thicken the stew.
9. Add Sour Cream: Once the stew has thickened, remove it from the heat. Gently stir in the sour cream until fully combined.
10. Adjust Seasoning: Taste the stew and adjust seasoning with salt and pepper as needed.
11. Rest the Stew: Allow the stew to rest for 15 minutes before serving.

Each of these steps contributes to building the incredible flavors that define Beef Stroganoff Stew, guiding you to delicious results.