Crockpot Sour Cream French Onion Flank Steak

There's nothing quite like coming home to a warm, comforting meal after a long day. This Crockpot Sour Cream French Onion Flank Steak is a family favorite that requires just a few minutes of prep and lets the slow cooker do the rest. The tender, flavorful steak and caramelized onions create a dish that's perfect for a cozy dinner at home. Plus, it's an excellent way to impress guests with minimal effort.

This recipe is a dump-and-go dream, making it ideal for busy weeknights or lazy Sunday afternoons. The rich, velvety gravy made with sour cream and brown gravy mix elevates the dish to a new level of deliciousness. Serve it over buttered egg noodles or mashed potatoes for a satisfying, hearty meal that everyone will love.

Why You’ll Love This Crockpot Recipe

• The tender, flavorful flank steak and caramelized onions create a rich, comforting meal.
• It’s a 5-minute prep dump-and-go recipe. Just toss everything into the Crockpot and let it cook!
• A velvety, creamy gravy made with sour cream and beef consommé adds an extra layer of richness.
• It's perfect for a hearty, comforting dinner on a budget.

Key Ingredients & Flavor Notes

This recipe features a combination of tender flank steak, sweet onions, and a creamy, savory gravy. The key to its rich flavor is the beef consommé, which adds depth and complexity to the dish. The sour cream and brown gravy mix create a velvety, comforting gravy that ties the whole meal together.

Chef’s Tips for Foolproof Slow Cooking

Trim any visible fat from the flank steak to prevent the dish from becoming too greasy.

If you prefer a thicker gravy, mix 1 tablespoon of cornstarch with 1 tablespoon of water and stir it into the Crockpot during the last 30 minutes of cooking.

Ingredients

• 2 lbs flank steak, thinly sliced
• 2 large Vidalia onions, thinly sliced
• 1 can (10.5 oz) beef consommé
• 1 cup sour cream
• 1 packet (1 oz) brown gravy mix

Step-by-Step Instructions

1. Place the thinly sliced flank steak in the Crockpot.
2. Layer the sliced Vidalia onions over the steak.
3. Pour the beef consommé over the steak and onions.
4. Dollop the sour cream evenly over the top.
5. Sprinkle the brown gravy mix over the sour cream.
6. Cover and cook on LOW for 8 hours or on HIGH for 4 hours.
7. Stir gently before serving.

What to Serve With It & Storage Tips

Serve this comforting Crockpot Sour Cream French Onion Flank Steak over buttered egg noodles, mashed potatoes, or rice for a hearty, satisfying meal. Garnish with fresh parsley or chives for a pop of color.

Store any leftovers in an airtight container in the refrigerator for up to 4 days. Reheat gently in the microwave or on the stovetop, adding a splash of water if needed to restore the gravy's consistency.

Frequently Asked Questions

Question?

Can I use a different cut of beef?

Answer.

While flank steak is recommended for its tenderness and flavor, you can use other cuts like sirloin or round steak. Keep in mind that cooking times may vary.

Question?

Can I make this recipe in the Instant Pot?

Answer.

Yes, you can adapt this recipe for the Instant Pot. Sear the steak first, then add the onions and consommé. Cook on high pressure for 35 minutes, then do a quick release. Stir in the sour cream and gravy mix before serving.

Question?

Can I freeze the leftovers?

Answer.

Yes, this dish freezes well. Allow it to cool completely, then transfer to a freezer-safe container. Freeze for up to 3 months. Thaw overnight in the refrigerator before reheating.