Sour Cream Pepper Flank Steak Crockpot Dinner Step-by-step instructions

Before you start

Before you start, set out all your ingredients. Thinly slice the flank steak against the grain into strips. Cut the bell peppers into thick strips and the red onion into wedges. Measure the sour cream and have the gravy mix ready.

If you plan to serve over noodles, bring a large pot of salted water to a boil just before the slow cooker finishes. No need to sear or brown anything—this recipe is truly dump and go.

Instructions

Layer and Walk Away

1. 1Layer the Ingredients
   Place the thinly sliced flank steak strips evenly in the bottom of a 6-quart slow cooker. Scatter the bell pepper strips and red onion wedges over the beef. Dollop the sour cream over the top, then sprinkle the brown gravy mix evenly over everything. Do not stir.
   Look for The beef should be covered with peppers, onions, sour cream, and gravy mix in distinct layers.
   Tip Keep the layers as even as possible so the flavors meld during cooking.
2. 2Cook on Low
   Cover the slow cooker and cook on low for 6 to 7 hours, until the beef is fork-tender and the peppers are soft. Avoid opening the lid during cooking to keep the heat steady. Let it rest for 3 minutes before slicing.
   Look for The sauce will be bubbling gently around the edges and the beef will shred easily with a fork.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip If the sauce seems thin at the end, remove the lid and cook on high for 15 to 20 minutes.

At the end of this phase, the slow cooker is filled with raw layers: beef at the bottom, topped with peppers and onions, then dollops of sour cream and a sprinkling of gravy mix.

The ingredients look distinct, and the sour cream is thick and white. The aroma is clean and fresh. You have done everything needed for the long cook.

Cook the Noodles and Finish the Sauce

3. 3Cook the Noodles
   About 20 minutes before serving, bring a large pot of salted water to a boil. Cook the egg noodles according to package directions until al dente. Drain well and toss with the butter. Season with salt and black pepper to taste.
   Look for The noodles should be tender but still firm to the bite, and glossy with butter.
   Tip Reserve a cup of pasta water in case the noodles need loosening later.
4. 4Finish the Sauce
   Once the beef is tender, gently stir the sauce to combine the sour cream and gravy into a smooth, velvety gravy. Taste and adjust seasoning with salt and black pepper. If the sauce is too thin, let it simmer uncovered for a few minutes.
   Look for The sauce should be thick enough to coat the back of a spoon.
   Tip Do not over-stir or the beef may break apart too much.

After the slow cooker has worked its magic, the beef is deeply browned and tender, the peppers are soft, and the sauce has turned a rich mahogany color, bubbling gently around the edges. The smell is savory and comforting. The noodles are cooked al dente and tossed with butter, ready to be topped.

Serve and Enjoy

5. 5Serve Over Noodles
   Spoon the buttered noodles onto plates or into shallow bowls. Ladle the beef and pepper mixture with plenty of gravy over the top. Serve hot.
   Look for The beef should be glistening with gravy and the peppers tender.
   Tip For a prettier plate, twirl the noodles into a nest before topping.

The final dish is a beautiful plate of buttered noodles crowned with tender beef, peppers, and a glossy gravy that coats everything. The steam rises, and the first bite is rich, tangy, and satisfying. The beef is fork-tender, the peppers are sweet, and the sauce is velvety smooth.

Common mistakes

One common mistake is lifting the lid too often. Every time the lid is removed, heat escapes and the cooking time increases. Another is using low-fat sour cream, which can curdle or separate more easily.

Also, avoid overcooking the peppers to the point of mush—while they should be tender, you want them to retain a little texture. Finally, don't skip the resting time for the beef, as it ensures the meat stays juicy.

How to tell it’s done

The dish is done when the beef is fork-tender and easily pulls apart, and the peppers are soft but not mushy. The sauce should be thick and velvety, not watery. To check the internal temperature of the beef, insert an instant-read thermometer into a thick piece; it should read at least 145°F (63°C).

Because the meat is cooked low and slow, it will be well beyond that, but the temperature is a safe guideline. Let the beef rest for at least 3 minutes before serving to allow the juices to redistribute.

• Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest