Step 1: Prepare the Beef

1. Pat the beef cubes dry with paper towels to remove excess moisture. This step helps them brown properly.
2. In a bowl, toss the beef cubes with flour, salt, and black pepper until evenly coated.

Step 2: Sear the Beef

1. Heat 1 tablespoon of olive oil in a large Dutch oven or heavy-bottomed pot over medium-high heat.
2. Add the beef cubes in batches, ensuring they’re not overcrowded, and sear on all sides until golden brown. This step creates a flavorful crust. Remove the beef from the pot and set aside.

Step 3: Sauté the Vegetables

1. In the same pot, lower the heat to medium and add the butter. Once melted, add the diced onion and cook until softened, about 5 minutes.
2. Add the garlic and cook for 1 minute, stirring constantly to prevent burning.
3. Stir in the wild mushrooms and carrots. Cook for 5-7 minutes, allowing the mushrooms to release their moisture and develop a golden color.

Step 4: Deglaze the Pot

1. Pour in the red wine, scraping up any browned bits from the bottom of the pot with a wooden spoon. This step adds flavor and ensures nothing goes to waste.
2. Let the wine simmer for 2-3 minutes, reducing slightly.

Step 5: Build the Broth

1. Stir in the beef broth, tomato paste, Worcestershire sauce, thyme, and bay leaf. Mix well to combine.

Step 6: Combine and Simmer

1. Return the seared beef cubes to the pot, along with any juices that accumulated on the plate. Stir gently to incorporate.
2. Bring the stew to a gentle boil, then reduce the heat to low. Cover the pot and let the stew simmer for 2 hours, stirring occasionally.

Step 7: Finish the Stew

1. After 2 hours, check the beef for tenderness. If it’s not fully tender, continue simmering for another 20-30 minutes.
2. If desired, stir in the heavy cream or sour cream for a richer, creamier stew. Adjust seasoning with salt and pepper to taste.

Step 8: Serve and Garnish

1. Remove the thyme sprigs and bay leaf before serving.
2. Ladle the stew into bowls and garnish with fresh parsley or grated Parmesan. Serve warm with your favorite side.