Crockpot Sour Cream Flank Steak Stroganoff

Imagine coming home to the smell of tender flank steak simmering in a creamy sour cream gravy, with sweet baby carrots and buttery red potatoes all cooked together in one pot. This slow cooker recipe delivers exactly that, with just a few minutes of prep in the morning.

The secret is the combination of simple ingredients—flank steak, carrots, potatoes, sour cream, and brown gravy mix—that transform into a rich, comforting dinner while you go about your day. No stirring, no fuss, no complicated techniques.

This Crockpot Sour Cream Flank Steak Stroganoff is the ultimate set-it-and-forget-it meal. Thinly sliced flank steak becomes meltingly tender after hours of slow cooking, while baby carrots and red potatoes soak up the savory gravy.

The sour cream adds a tangy richness that balances the beef, and the brown gravy mix gives the sauce a deep, savory flavor. Serve it over buttered egg noodles for a complete, satisfying dinner that tastes like you spent hours in the kitchen—but the slow cooker did all the work. Perfect for busy weeknights or lazy weekends.

Ingredients

Why this recipe works

The slow cooker works its magic on flank steak, a cut that can be tough if cooked quickly. The low, moist heat breaks down the connective tissue over several hours, turning the meat into fork-tender strands that practically melt in your mouth.

This method requires no browning or searing, saving time and cleanup while still delivering deeply savory results. The vegetables cook alongside the beef, absorbing the juices and becoming glazed and tender.

The combination of sour cream and brown gravy mix creates a velvety, tangy sauce that clings to every ingredient. The gravy mix provides a concentrated base of flavor, while the sour cream adds richness and a slight tang that brightens the dish. Because the ingredients are layered and cooked slowly, the flavors meld and deepen without any extra steps. The result is a comforting, homey meal that feels indulgent but requires minimal effort.

Notes and substitutions

Flank steak is the star here, but you can also use sirloin or round steak. Slice it thinly against the grain to help it become tender. Baby carrots are sweet and cook evenly, but regular carrots cut into chunks work just as well. Red bliss potatoes hold their shape during long cooking and have a creamy texture. If you prefer, Yukon Gold or new potatoes are great substitutes.

Brown gravy mix is a convenient shortcut that provides a rich, savory base. If you prefer to make your own, you can whisk together beef broth and cornstarch, but the mix keeps things simple. Sour cream should be full-fat for the best flavor and texture.

The dish is traditionally served over egg noodles, but mashed potatoes or rice would also be delicious. This recipe is naturally gluten-free if you use a gluten-free gravy mix and serve it with rice or potatoes instead of noodles.

• flank steak: sirloin or round steak, thinly sliced
• baby carrots: regular carrots, peeled and cut into 2-inch pieces
• red bliss potatoes: Yukon Gold or new potatoes, quartered
• brown gravy mix: 1 tablespoon cornstarch mixed with 1 cup beef broth

Equipment

• 6-quart slow cooker
• Stainless steel spoon
• Cutting board
• Chef's knife
• Measuring cups
• Measuring spoons
• Large pot for noodles