Beef • Slow Cooker

Slow Cooker Pot Roast

Name: Slow Cooker Pot Roast
Prep time: 25 min
Cook time: 8 min
Total time: 8 min
Yield: 6 servings
Ingredients: 3.5 lb beef chuck roast; 2 tsp salt plus 1 tsp black pepper; 2 tbsp vegetable oil; 2 lb Yukon Gold potatoes, quartered; 4 large carrots, cut into 2-inch pieces; 1 large onion, cut into wedges, plus 3 celery stalks sliced; 2 cups beef broth; 2 tbsp tomato paste plus 1 tbsp Worcestershire sauce; 2 tsp dried thyme plus 2 bay leaves

Fork-tender chuck roast slow-cooked with potatoes, carrots, onion, and savory gravy.

Updated: Oct 6, 2026

⏱ 8 hours 25 minutestotal

6servings

640 kcalper serving

Easylevel

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Why you'll like it

Ready in about 8 hours 25 minutes.
Serves 6 — easy to halve or double.
Easy level — everyday equipment only.
Storage, freezing and reheating covered below.

This Slow Cooker Pot Roast recipe takes 8 hours 25 minutes and makes 6 servings. Slow cooker pot roast is a dependable Sunday dinner because the long, gentle cook turns chuck roast fork-tender with little attention.

Helpful guides

Instructions

Step 1

Pat the chuck roast dry with paper towels and season all over with salt and pepper. Heat oil in a skillet over medium-high heat and sear the roast 3 to 4 minutes per side until deeply browned. Browning first adds flavor that a slow cooker cannot create on its own.

Step 2

Scatter potatoes, carrots, onion, and celery in the bottom of a 6-quart slow cooker. Whisk broth with tomato paste, Worcestershire, and thyme, then pour over the vegetables. Set the seared roast on top and tuck in the bay leaves.

Step 3

Cover and cook on low for 8 hours or on high for 4.5 to 5 hours, until the beef shreds easily with a fork and vegetables are tender. Avoid lifting the lid during cooking, since each peek adds cooking time and drops the temperature.

Step 4

Transfer the roast and vegetables to a platter and tent with foil. Strain 2 cups of cooking liquid into a saucepan and simmer 5 to 8 minutes until slightly reduced. For thicker gravy, whisk in a slurry of 1 tablespoon cornstarch and 2 tablespoons cold water and simmer 2 minutes.

Step 5

Shred or slice the beef against the grain and check that it is steaming hot throughout; slow-cooked chuck is well past safe temperatures when fork-tender. Remove bay leaves. Spoon vegetables around the meat and drizzle with the reduced cooking juices.

Step 6

Serve hot with dinner rolls or over mashed potatoes. Cool leftovers within 2 hours into shallow containers. Reheat covered until steaming and reaching 165°F, adding broth if the meat seems dry.

Troubleshooting — fixes, not repeats

If roast is tough at 8 hours, keep cooking; chuck varies in thickness and some roasts need an extra hour before connective tissue fully softens.
If vegetables turn mushy, cut them larger next time and keep them under the meat; small pieces overcook during the long cycle while the roast finishes.
If gravy tastes greasy, chill the liquid briefly and skim fat from the surface before reducing; chuck releases considerable fat over 8 hours.
If the cooker runs hot and boils, switch to low and add 1/2 cup broth; boiling toughens meat, while a gentle simmer keeps it tender and juicy.

Make it your way

Spicier version: For a spicy Italian style, add 1/2 cup sliced pepperoncini and 1 teaspoon Italian seasoning, then serve on toasted rolls.
Old Dhaka style: Swap sweet potatoes for Yukon Golds and add 1 teaspoon smoked paprika for a sweeter, smokier pot roast.
For an onion soup version, replace tomato paste and thyme with 1 packet onion soup mix and 1 cup red wine for deeper flavor.

Storage & reheating

Cool leftovers within 2 hours, then refrigerate in a covered container and use within 3 to 4 days. Reheat only the portion you will eat until steaming hot throughout — poultry and reheated rice should reach 165°F (74°C).

Reheat covered in a 325°F oven or in a saucepan over medium-low heat until steaming and reaching 165°F throughout.

Freeze for up to 3 months; thaw overnight in the refrigerator and add broth when reheating.

FAQ

Should I cook pot roast on low or high?
Low is better for tenderness because gentle heat breaks down connective tissue without squeezing out moisture. High works when short on time but can leave the meat slightly firmer. Either way, the roast is done when it shreds easily with a fork.

Can I put frozen beef in the slow cooker?
No. Frozen meat spends too long in the unsafe temperature zone while thawing. Thaw the roast fully in the refrigerator first, which takes about 24 hours for a 3 to 4 pound roast, then sear and cook as directed.

Why is my pot roast dry?
Dryness usually means overcooking on high or cooking uncovered, which lets moisture escape. Cook on low with the lid sealed, keep the meat nestled in liquid, and slice against the grain so fibers stay short and tender.