Crockpot Sour Cream Flank Steak Stroganoff Tips, FAQ & printable recipe

Tips for success

For the most tender beef, always slice flank steak against the grain. This shortens the muscle fibers, making them easier to chew. If you have time, sear the steak strips in a hot skillet before adding them to the slow cooker—this adds a deeper flavor, though the recipe works beautifully without it.

For a thicker gravy, whisk 2 tablespoons of cornstarch with 2 tablespoons of cold water and stir it into the slow cooker during the last 30 minutes of cooking.

To make this dish even more convenient, assemble everything in the slow cooker insert the night before and refrigerate it. In the morning, place the insert in the cooker and start it. This is a great make-ahead meal for busy weeks. Leftovers keep well in the fridge for up to 4 days and can be reheated gently on the stovetop or in the microwave. The flavors only get better the next day.

Variations

• Mushroom Stroganoff: Add 8 oz sliced mushrooms along with the beef. They will cook down and add an earthy flavor that complements the gravy. Increase the sour cream to 1 1/2 cups for extra creaminess.
• Use Chicken Instead: Swap the flank steak for boneless, skinless chicken thighs. Cook on low for 6-7 hours until the chicken is tender and shreds easily. Ensure the chicken reaches 165°F (74°C) before serving.
• Add Onions and Garlic: Sprinkle 1 chopped onion and 3 minced garlic cloves over the beef before adding the other ingredients. They will meld into the gravy, adding depth and savory notes.
• Make It Spicy: Stir 1 teaspoon smoked paprika and 1/2 teaspoon cayenne pepper into the gravy mix for a smoky, spicy kick. Adjust the amount to suit your heat preference.

Storage and make-ahead

Fridge

Store in an airtight container in the refrigerator for up to 4 days. Reheat gently, adding a splash of broth if needed.

Freezer

Freeze the cooked stroganoff (without noodles) in a freezer-safe container for up to 3 months. Thaw overnight in the refrigerator before reheating.

Reheat

Reheat in a saucepan over medium-low heat, stirring occasionally, until hot. Add a little beef broth or water to loosen the gravy. Do not boil.

Store leftovers in an airtight container in the refrigerator for up to 4 days. The gravy will thicken as it cools; add a splash of beef broth or water when reheating to loosen it. Reheat gently on the stovetop over medium-low heat, stirring occasionally, or in the microwave in 30-second bursts. Do not let it boil, as the sour cream may curdle.

This recipe is ideal for meal prep. Assemble the slow cooker insert with all ingredients except the noodles the night before, cover, and refrigerate. In the morning, place the insert in the slow cooker and cook as directed.

The cooking time may need to be extended by about 30 minutes if starting from cold. Cook the noodles fresh when ready to serve, or cook and refrigerate them separately to reheat in boiling water for a few seconds.

Serving ideas

Serve the stroganoff over a generous bed of buttered egg noodles, letting the gravy soak into the pasta. The tender beef, glazed carrots, and creamy potatoes sit on top, making a colorful and satisfying plate.

A sprinkle of fresh parsley adds a pop of color and freshness, though it is optional. This dish pairs well with a simple green salad or steamed green beans to balance the richness.

For a rustic presentation, serve directly from the slow cooker at the table. The bubbling gravy and fragrant steam will tempt everyone. If you have leftovers, they are even better the next day—reheat gently and serve over fresh noodles or mashed potatoes.

This recipe is a family favorite that is sure to become a regular in your dinner rotation, especially on cold evenings when you crave comfort food.

Frequently asked questions

Recipe card

Crockpot Sour Cream Flank Steak Stroganoff

Prep 10 minCook 8 hTotal 8 h 10 minServes 6

Ingredients

• 2 lb flank steak, thinly sliced against the grain
• 1 lb baby carrots
• 1 1/2 lb red bliss potatoes, quartered
• 1 cup sour cream
• 1 oz brown gravy mix (1 packet)
• 12 oz egg noodles, cooked and buttered for serving

Instructions

1. Place the thinly sliced flank steak strips in the bottom of a 6-quart slow cooker. Scatter the baby carrots and quartered red potatoes over the beef. Dollop the sour cream over the top, then sprinkle the brown gravy mix evenly over everything. Do not stir.
2. Cover the slow cooker and cook on LOW for 8 hours or on HIGH for 4-5 hours, until the beef is fork-tender and the potatoes are easily pierced. Do not lift the lid during cooking unless checking near the end. Let it rest for 3 minutes before slicing.
3. Once the beef is tender, stir the sauce gently to combine the sour cream and gravy mix into a smooth, velvety gravy. If the sauce seems thin, let it cook uncovered for 15-20 minutes to thicken slightly.
4. While the slow cooker finishes, bring a large pot of salted water to a boil. Cook the egg noodles according to package directions until al dente. Drain and toss with a little butter if desired.
5. Spoon the buttered noodles onto plates or a platter. Ladle the beef, carrots, potatoes, and gravy over the top. Serve hot.

Contains: gluten, milk, eggs

Estimated nutrition per serving

Calories

540

Protein

41 g

Carbohydrates

48 g

Fat

20 g

Automatic estimate from the ingredient list, not laboratory-verified.