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Dinner · Part 2 of 3: Instructions

Slow Cooker Tomato Basil Pot Roast for an Easy Dinner Step-by-step instructions

A steaming, tender beef pot roast served over pappardelle pasta on a white plate.
Prep
Cook
Total
Serves
6
Includes 10 min resting

Before you start

Before beginning, gather all ingredients and ensure the slow cooker is clean and positioned near a power outlet. Pat the beef roast dry with paper towels to ensure a clean surface, though searing is not required for this specific method.

Have your serving vessel, such as a large platter, ready to receive the finished roast. Check that your slow cooker lid fits securely to lock in moisture and heat throughout the cooking cycle, which is essential for achieving the desired tenderness.

Ingredients at a glance (4)
  • 3 lb beef chuck roast
  • 1 can (14.5 oz) diced tomatoes
  • 1 packet Italian seasoning
  • 1 jar (24 oz) pasta sauce

Instructions

Layering the ingredients

  1. Prepare the slow cooker
    Place the raw beef chuck roast into the bottom of the slow cooker basin. Ensure the meat is positioned centrally to allow for even heat distribution during the long cooking process.
    Look for The beef is flat in the cooker
    Tip Trim any excess surface fat if desired for a cleaner sauce, but keep some for moisture.
  2. Add aromatics and liquids
    Dump the diced tomatoes over the beef. Sprinkle the entire packet of Italian seasoning evenly across the surface of the meat and tomatoes. Finally, pour the jar of pasta sauce over the top, ensuring it covers the roast.
    Look for All ingredients are layered evenly
    Tip Pour the sauce slowly to avoid splashing the sides of the slow cooker.

The slow cooker base should be clear of debris, with the raw beef roast sitting flat at the bottom. The diced tomatoes, seasoning, and pasta sauce should be layered evenly over the beef, creating a uniform environment for the cooking process. Ensure the lid is placed firmly on the cooker to prevent heat loss, and verify that the power setting is on low before walking away from the appliance for the long duration.

Slow simmering

  1. Slow cook the beef
    Cover the slow cooker with the lid. Set the device to the low setting and cook for 8 hours. This slow, moist heat process allows the connective tissues in the beef roast to break down completely, resulting in a tender texture. Ensure the meat reaches an internal temperature of at least 145°F (63°C) and let the meat rest for at least 3 minutes before shredding.
    Look for Meat is fork tender
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Avoid lifting the lid frequently to maintain a consistent temperature inside the cooker.

During the cooking phase, the slow cooker should remain undisturbed. The kitchen will begin to smell of savory tomatoes and herbs as the beef reaches a safe internal temperature of 145°F (63°C). The liquid levels should remain relatively stable, and the beef should look visibly softened. There is no need to stir or adjust the ingredients, as the slow, steady heat is doing the work to tenderize the protein.

Shredding and finishing

  1. Shred and serve
    Remove the cooked beef from the slow cooker and place it onto a cutting board or platter. Use two forks to shred the beef into bite-sized pieces. Once shredded, return the meat to the sauce in the slow cooker to coat it thoroughly. Serve immediately over prepared pasta.
    Look for Beef is easily shredded
    Tip Serve over hot pasta for a complete meal experience.

The final phase involves removing the tender beef to a separate surface for shredding. The meat should fall apart effortlessly under the pressure of two forks, showing a consistent texture.

After shredding, the beef is returned to the warm sauce to absorb the remaining flavors. Before serving, verify the final temperature and allow the dish to rest for 3 minutes, ensuring the sauce is well-distributed and the meat is perfectly coated and hot.

Common mistakes

A common mistake is opening the lid too frequently during the cooking process, which releases essential heat and moisture, significantly increasing the total cooking time and risking a tougher texture.

Another error is failing to allow the meat to rest for at least 3 minutes after shredding; resting is crucial as it allows the juices to redistribute throughout the meat, ensuring that every bite remains succulent rather than dry. Always ensure the slow cooker is set correctly from the start to avoid undercooking.

How to tell it’s done

The beef is considered done when it reaches an internal temperature of at least 145°F (63°C). Beyond the temperature check, the most reliable indicator of doneness for this slow-cooked dish is the texture of the meat.

Use a fork to test the roast; if it pulls apart with minimal resistance and shreds easily, it is perfectly cooked. The sauce should be glossy and slightly thickened, clinging to the shredded beef fibers without appearing watery or broken.

  • 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 the beef be seared before adding it to the slow cooker?
  • What is the best way to ensure the beef is tender?
  • Is it possible to cook this on a high setting?

Also in Part 3: variations (Spicy Tomato Basil Roast, Vegetable-Enhanced Roast), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

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