Beef Stroganoff with Mushrooms

Ingredients

For the beef:

• 1 1/2 pounds beef sirloin or tenderloin (cut into thin strips)
• 2 tablespoons olive oil
• 1 tablespoon unsalted butter
• Salt and black pepper (to taste)
• 1 tablespoon all-purpose flour (optional, for thickening)

For the sauce:

• 1 medium onion (finely chopped)
• 3 cloves garlic (minced)
• 8 ounces cremini or button mushrooms (sliced)
• 1 cup beef broth
• 1 tablespoon Worcestershire sauce
• 1 tablespoon Dijon mustard
• 1 cup sour cream
• 1/2 cup heavy cream
• 1 teaspoon paprika
• 1/4 teaspoon dried thyme
• 1/4 teaspoon dried parsley
• 1 tablespoon fresh parsley (chopped, for garnish)

For serving:

• Egg noodles, rice, or mashed potatoes (cooked according to package instructions)

Instructions

1. Prepare the Beef:

   1. Season the beef strips with salt and black pepper. If you prefer a thicker sauce, toss the beef strips in flour to coat lightly.
   2. Heat the olive oil and butter in a large skillet over medium-high heat until the butter is melted and the oil is hot.
   3. Add the beef strips in a single layer (you may need to do this in batches to avoid overcrowding the pan). Cook for 2-3 minutes per side, or until browned and just cooked through. Remove the beef from the skillet and set aside.

2. Prepare the Sauce:

   1. In the same skillet, add a bit more olive oil if necessary. Add the chopped onion and cook until softened and translucent, about 3-4 minutes.
   2. Add the minced garlic and cook for another 1 minute, until fragrant.
   3. Add the sliced mushrooms to the skillet and cook until they release their moisture and become golden brown, about 5-7 minutes.
   4. Pour in the beef broth, Worcestershire sauce, and Dijon mustard. Stir to combine and bring the mixture to a simmer.
   5. Reduce the heat to low and let the sauce simmer for about 5 minutes to allow the flavors to meld.

3. Finish the Dish:

   1. Stir in the sour cream and heavy cream until the sauce is smooth and creamy. If the sauce is too thick, add a bit more beef broth or water to reach your desired consistency.
   2. Season the sauce with paprika, dried thyme, dried parsley, salt, and black pepper. Adjust seasoning to taste.
   3. Return the cooked beef strips to the skillet and stir to coat them with the sauce. Cook for another 2-3 minutes, until the beef is heated through and the sauce has thickened slightly.

4. Serve:

   1. Serve the Beef Stroganoff over cooked egg noodles, rice, or mashed potatoes. Garnish with freshly chopped parsley for a touch of color and flavor.