Slow Cooker French Onion Beef Stroganoff

Ingredients

• 2 pounds beef stew meat, cut into bite-sized pieces
• 1 large onion, thinly sliced
• 8 ounces mushrooms, sliced
• 1 packet (1 ounce) French onion soup mix
• 1 can (10.5 ounces) condensed cream of mushroom soup
• 2 cups beef broth
• 2 tablespoons Worcestershire sauce
• 3 cloves garlic, minced
• 1 teaspoon paprika
• 1/2 teaspoon black pepper
• 2 tablespoons butter
• 1 tablespoon cornstarch
• 2 tablespoons cold water
• 1 cup sour cream
• 12 ounces egg noodles
• Fresh parsley, chopped (optional)

Instructions

Step 1: Prepare the Beef

Cut the beef stew meat into bite-sized pieces. Pat dry with paper towels and season lightly with black pepper.

For extra flavor, heat the butter in a skillet over medium-high heat and sear the beef in batches until browned on the outside. This step is optional but adds a deeper, richer flavor.

Step 2: Add the Ingredients to the Slow Cooker

Place the sliced onions and mushrooms in the bottom of the slow cooker. Add the beef and minced garlic.

In a medium bowl, whisk together the French onion soup mix, cream of mushroom soup, beef broth, Worcestershire sauce, and paprika until combined.

Pour the mixture over the beef and vegetables, stirring gently to coat everything evenly.

Step 3: Slow Cook Until Tender

Cover and cook on LOW for 7–8 hours or on HIGH for 4–5 hours, until the beef is fork-tender.

Cooking times may vary depending on the size of the beef pieces and your slow cooker.

Step 4: Thicken the Sauce

About 20–30 minutes before serving, mix the cornstarch with the cold water in a small bowl until smooth.

Stir the slurry into the slow cooker. Cover and cook for another 20–30 minutes, until the sauce thickens.

Step 5: Add the Sour Cream

Turn off the slow cooker or switch it to the WARM setting. Let the mixture stop bubbling, then stir in the sour cream until the sauce is creamy and smooth.

Avoid boiling the sauce after adding the sour cream, as it may separate.

Step 6: Cook the Egg Noodles

While the beef finishes cooking, bring a large pot of salted water to a boil.

Cook the egg noodles according to the package directions until tender. Drain well.

Step 7: Serve

Spoon the creamy French onion beef stroganoff over the cooked egg noodles. Garnish with freshly chopped parsley, if desired.

Serve immediately while warm and creamy.

Tips for the Best Beef Stroganoff

• Choose the right beef: Beef chuck or stew meat works well because it becomes tender during slow cooking.
• Brown the beef first: Although optional, searing the meat adds extra depth and flavor.
• Use full-fat sour cream: This generally provides a richer, creamier sauce.
• Add sour cream at the end: This helps prevent curdling and keeps the sauce smooth.
• Adjust the thickness: If the sauce is too thick, add a little warm beef broth. If it is too thin, cook it uncovered briefly or add a little more cornstarch slurry.

What to Serve with French Onion Beef Stroganoff

This hearty dish pairs beautifully with:

• Garlic bread
• Steamed green beans
• Roasted carrots
• A fresh green salad
• Mashed potatoes
• Buttered peas

Storage and Reheating

Refrigerator: Store leftovers in an airtight container for 3–4 days.

Freezer: Freeze the beef and sauce separately from the noodles for the best texture, for up to 2–3 months.

Reheating: Warm gently in a saucepan over low heat, adding a splash of beef broth if needed. Avoid boiling, especially after the sour cream has been added.

Frequently Asked Questions

Can I use a different cut of beef?

Yes. Beef chuck roast cut into cubes is an excellent choice. Avoid very lean cuts that may become dry during long cooking.

Can I make this recipe without mushrooms?

Absolutely. Simply leave them out or replace them with additional sliced onions.

Can I use Greek yogurt instead of sour cream?

Yes. Plain, full-fat Greek yogurt can work as a substitute. Stir it in at the end over low heat to help prevent separation.

Can I prepare this recipe ahead of time?

Yes. You can slice the vegetables and measure the sauce ingredients ahead of time. Refrigerate them until you’re ready to assemble the dish and begin cooking.

Final Thoughts

Slow Cooker French Onion Beef Stroganoff combines tender beef, sweet caramelized-style onions, earthy mushrooms, and a rich, creamy sauce in one comforting meal. With minimal preparation and the convenience of a slow cooker, it’s an excellent dinner for busy families. Serve it over warm egg noodles for a satisfying meal everyone will want again!