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Dinner · Part 2 of 3: Instructions

Slow-Cooker Sirloin Tips with Green Beans and Sour Cream Gravy Step-by-step instructions

Slow cooker full of sirloin tips, green beans, and potatoes in a creamy brown gravy
Prep
Cook
Total
Serves
6

Before you start

Before you start, trim the green beans and cut the potatoes into even 1-inch cubes. If your sirloin tips are large, cut them into uniform pieces. Have the sour cream and gravy mix ready.

The slow cooker should be clean and dry. No need to brown the beef first—this recipe is all about convenience, and the slow cooking will develop plenty of flavor.

Ingredients at a glance (7)
  • 2 lb sirloin steak tips
  • 1 lb fresh green beans, trimmed
  • 1 1/2 lb russet potatoes, cubed (about 3 medium)
  • 1 cup sour cream
  • 1 oz brown gravy mix (dry)
  • 12 oz egg noodles, cooked and buttered, for serving
  • Salt and black pepper, to taste

Instructions

Layer and Mix

  1. Layer the Ingredients
    Place the sirloin steak tips in the bottom of a 6-quart slow cooker. Scatter the trimmed green beans and cubed russet potatoes over the beef. Season with salt and black pepper if desired.
    Look for The beef should be in a single layer, with the vegetables evenly distributed on top.
    Tip Cut the potatoes into even 1-inch cubes so they cook at the same rate as the beef.
  2. Add the Sauce Base
    In a small bowl, whisk together the sour cream and the dry brown gravy mix until smooth. Pour the mixture over the ingredients in the slow cooker, then stir gently to coat everything evenly.
    Look for The sour cream mixture should look smooth and evenly distributed.
    Tip If the mixture is too thick, add a splash of water or beef broth to help it spread.

At the end of this phase, the slow cooker should contain a colorful layer of beef, green beans, and potatoes, topped with a pale sour cream mixture.

The ingredients should be evenly coated, and the aroma of the gravy mix should be noticeable. Everything should look fresh and vibrant, ready for the long, slow cook.

Slow-Cook and Tenderize

  1. Slow-Cook on Low
    Cover the slow cooker and cook on low for 6 to 8 hours, until the beef is fork-tender and the potatoes are easily pierced with a fork. Do not lift the lid during the first 4 hours to maintain heat. Let it rest for 3 minutes before slicing.
    Look for The gravy should be bubbling gently around the edges, and the aroma of beef and onions will fill the kitchen.
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Cooking on low yields the most tender beef; high heat can toughen the meat.
  2. Check for Doneness
    After 6 hours, check the beef for doneness. The internal temperature should read at least 145°F (63°C) on an instant-read thermometer. The meat should be fork-tender, and the potatoes should offer no resistance when pierced. Let it rest for 3 minutes before slicing.
    Look for The beef should shred easily with a fork, and the potatoes should be soft throughout.
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip If the beef is not yet tender, continue cooking in 30-minute increments.

After several hours on low, the slow cooker will be bubbling gently. The gravy will darken to a rich mahogany, and the beef will be visibly tender. The kitchen will smell of savory beef and herbs. The potatoes should be soft when pierced, and the green beans should be tender but still have a slight snap.

Rest and Serve

  1. Rest the Beef
    Once the beef is cooked through, turn off the slow cooker and let the beef rest in the sauce for at least 3 minutes. This allows the juices to redistribute and ensures a moist, tender bite.
    Look for The sauce will settle slightly as it rests.
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Resting is essential for whole cuts of meat; it prevents dryness.
  2. Serve Over Noodles
    Prepare the buttered egg noodles according to package directions while the beef rests. To serve, spoon the noodles onto plates or a platter, then ladle the beef, vegetables, and gravy over the top. Season with additional salt and pepper if needed.
    Look for The noodles should be tender and glossy with butter.
    Tip For a gluten-free option, serve over cooked rice or mashed potatoes instead.

The beef has rested, and the gravy has settled. The sauce is thick and glossy, coating the meat and vegetables beautifully. The buttered noodles are ready, and the dish is piping hot. The final presentation is a hearty, comforting bowl that looks as delicious as it tastes.

Common mistakes

One common mistake is lifting the lid too often during cooking, which lets heat escape and extends the cooking time. Another is overcooking the potatoes, which can turn them into mush.

Stick to the recommended cooking times and resist the urge to stir too frequently. Also, be sure to season the layers lightly with salt and pepper—the gravy mix adds salt, so taste before adding more.

How to tell it’s done

The beef is done when it reaches an internal temperature of at least 145°F (63°C) and is fork-tender. The potatoes should be easily pierced with a knife.

The gravy should be thick and cling to the back of a spoon. If the sauce seems too thin, remove the lid and cook on high for the last 30 minutes to reduce it slightly.

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

Coming up in Part 3: common questions

  • Can this recipe be made without a slow cooker?
  • How can the gravy be thickened if it is too thin?
  • What is the best cut of beef for this recipe?
  • Can frozen green beans be used instead of fresh?
  • How long can leftovers be kept?

Also in Part 3: variations (Mushroom and Onion, Spicy Kick, Herb Infusion, Vegetable Boost), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

4 variations · storage & make-ahead · 5 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)