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Crockpot & Slow Cooker

Crockpot Sour Cream Mushroom Flank Steak

There's something incredibly comforting about a hearty Crockpot meal that's ready when you walk in the door after a long day. This Crockpot Sour Cream Mushroom Flank Steak is a family favorite that's perfect for busy weeknights. The tenderness of the flank steak, combined with the rich, creamy gravy, makes it a dish that everyone will love. Plus, with just a few simple ingredients and minimal prep time, it's an easy and budget-friendly meal that the whole family will enjoy.

This recipe is perfect for those who love a good stroganoff but want to switch up the usual beef and noodles. The flank steak adds a unique twist with its rich, beefy flavor and tender texture. It's a dish that's sure to become a staple in your household, and it's perfect for meal prepping or freezing for later. So, let's dive into this delicious, comforting dish.

Why You’ll Love This Crockpot Recipe

  • Tender, flavorful flank steak that's slow-cooked to perfection
  • Rich and creamy sour cream mushroom gravy that's velvety and delicious
  • The convenience of a dump-and-go Crockpot recipe that requires minimal effort and only a few ingredients
  • A satisfying dish that's perfect for busy weeknights or meal prepping for the week ahead

Key Ingredients & Flavor Notes

This Crockpot Sour Cream Mushroom Flank Steak is packed with rich, comforting flavors that come together beautifully in the slow cooker. The key ingredients, such as flank steak, cream of mushroom soup, and sour cream, create a velvety, savory gravy that's absolutely delicious. The onions add a touch of sweetness and depth of flavor, while the brown gravy mix enhances the rich, beefy taste of the steak.

Chef’s Tips for Foolproof Slow Cooking

To ensure your Crockpot Sour Cream Mushroom Flank Steak turns out perfectly every time, follow these helpful tips:

  • Thinly slice the flank steak against the grain for maximum tenderness
  • Use a good-quality brown gravy mix for the best flavor
  • Stir the ingredients gently to avoid breaking up the flank steak
  • For a thicker gravy, mix a slurry of cornstarch and water and stir it into the Crockpot during the last 30 minutes of cooking

Ingredients

  • 2 pounds flank steak, thinly sliced
  • 1 can (10.5 oz) condensed cream of mushroom soup
  • 1 medium onion, diced
  • 1 cup sour cream
  • 1 packet (1.1 oz) brown gravy mix

Step-by-Step Instructions

  1. Place the thinly sliced flank steak in the bottom of your Crockpot
  2. Pour the condensed cream of mushroom soup over the steak
  3. Scatter the diced onions evenly over the steak and soup mixture
  4. Dollop the sour cream over the top of the mixture
  5. Sprinkle the brown gravy mix over the top
  6. Cover and cook on LOW for 8 hours or on HIGH for 4 hours
  7. Stir gently to combine all the ingredients
  8. Serve over buttered egg noodles or mashed potatoes and enjoy!

What to Serve With It & Storage Tips

This Crockpot Sour Cream Mushroom Flank Steak is a hearty and satisfying dish that pairs perfectly with a variety of sides. Some of our favorites include:

  • Buttered egg noodles
  • Mashed potatoes
  • Crusty bread
  • Steamed vegetables

To store any leftovers, allow the dish to cool to room temperature, then transfer it to an airtight container and refrigerate for up to 4 days. You can also freeze individual portions for up to 3 months. To reheat, simply thaw overnight in the refrigerator and warm in the microwave or on the stovetop over low heat until heated through.

Frequently Asked Questions

Question?

Can I use a different cut of beef?

Answer:

While flank steak is recommended for this recipe, you can use other cuts of beef such as sirloin or chuck. However, keep in mind that the cooking time may vary, and you may need to adjust the seasoning accordingly.

Question?

Can I make this recipe in the Instant Pot?

Answer:

Yes, you can make this recipe in the Instant Pot. Follow the same steps, but instead of cooking on LOW or HIGH, use the meat/stew setting for 35 minutes, followed by a natural pressure release. Stir the ingredients gently to combine before serving.

Question?

Can I add more vegetables to this recipe?

Answer:

Absolutely! Feel free to add your favorite vegetables, such as sliced mushrooms, carrots, or celery, to the Crockpot along with the onions. Just make sure to adjust the cooking time accordingly, as some vegetables may take longer to cook than others.

I cook these recipes at home before they ever land here — simple ingredients, clear steps.

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