Slow Cooker Pot Roast

Featured in: Weekend Chill Plates

This comforting dish features a beef chuck roast seasoned and seared before slow cooking it with onions, garlic, carrots, and celery in a flavorful broth infused with herbs and tomato paste. Finished with rich pan juices, it’s served alongside creamy mashed Yukon Gold potatoes seasoned simply with butter and milk. This hearty main combines tender meat with smooth, buttery potatoes, making it ideal for a cozy family dinner.

Updated on Sun, 09 Nov 2025 10:50:00 GMT
Slow Cooker Pot Roast with Mashed Potatoes served with rich brown gravy and fresh parsley.  Save
Slow Cooker Pot Roast with Mashed Potatoes served with rich brown gravy and fresh parsley. | williesnack.com

A classic, comforting dish featuring tender beef pot roast slow-cooked with vegetables and rich gravy, served alongside creamy mashed potatoes.

This recipe has been a family favorite for years and always brings comfort on chilly evenings.

Ingredients

  • Beef chuck roast: 3 lbs (1.4 kg)
  • Kosher salt: 1 tbsp
  • Black pepper: 1 tsp
  • Olive oil: 2 tbsp
  • Onion: 1 large, sliced
  • Garlic: 4 cloves, minced
  • Carrots: 4 large, peeled and cut into 2-inch pieces
  • Celery stalks: 3, cut into 2-inch pieces
  • Beef broth: 2 cups (480 ml), gluten-free if needed
  • Tomato paste: 2 tbsp
  • Worcestershire sauce: 1 tbsp, gluten-free if needed
  • Dried thyme: 1 tsp
  • Dried rosemary: 1 tsp
  • Bay leaves: 2
  • Yukon Gold or Russet potatoes: 2 lbs (900 g), peeled and cut into chunks
  • Unsalted butter: 4 tbsp
  • Whole milk: ½ cup (120 ml), plus more as needed
  • Salt: 1 tsp
  • Black pepper: ½ tsp
  • Chopped fresh parsley: Optional garnish

Instructions

Step 1:
Pat the beef chuck roast dry and season all sides with salt and pepper.
Step 2:
In a large skillet, heat olive oil over medium-high heat. Sear the roast on all sides until browned (about 3–4 minutes per side). Transfer to the slow cooker.
Step 3:
Add onion, garlic, carrots, and celery around the roast in the slow cooker.
Step 4:
In a bowl, whisk together beef broth, tomato paste, Worcestershire sauce, thyme, rosemary, and bay leaves. Pour over the roast and vegetables.
Step 5:
Cover and cook on low for 8 hours, or until the beef is fork-tender.
Step 6:
About 40 minutes before serving, prepare the mashed potatoes Place potatoes in a large pot and cover with cold water Add 1 tsp salt Bring to a boil reduce heat and simmer until potatoes are very tender (15 20 minutes) Drain well and return potatoes to the pot Add butter and milk mash until smooth and creamy Season with salt and pepper to taste Add more milk if needed for desired consistency.
Step 7:
Remove the roast from the slow cooker and let rest for 5 minutes Discard bay leaves Shred or slice the beef.
Step 8:
Serve pot roast and vegetables over a bed of mashed potatoes Drizzle with pan juices and garnish with fresh parsley if desired.
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Sharing this meal always brings the family together around the dinner table for warm conversation and laughter.

Notes

Red wine can be substituted for part of the broth to enhance flavor. Yukon Gold potatoes create creamier mashed potatoes, but Russet work well too.

Required Tools

Slow cooker (6-quart or larger), large skillet, chefs knife and cutting board, large pot, potato masher or ricer, measuring cups and spoons.

Allergen Information

Contains dairy butter milk Worcestershire sauce may contain anchovies fish Gluten-free if using gluten-free broth and Worcestershire sauce Always verify ingredient labels for allergens.

Comforting Slow Cooker Pot Roast with Mashed Potatoes, a steaming, savory dinner delight.  Save
Comforting Slow Cooker Pot Roast with Mashed Potatoes, a steaming, savory dinner delight. | williesnack.com

This slow cooker pot roast recipe is the perfect cozy meal for any day and guarantees leftovers everyone will love.

Recipe Questions & Answers

How do I ensure the beef stays tender?

Slow cooking the beef for 8 hours on low allows the connective tissues to break down, resulting in a tender, juicy roast.

Can I substitute vegetables in this dish?

Yes, carrots, celery, and onions are traditional, but you can add parsnips or turnips for additional flavor and texture.

What type of potatoes work best for mashing?

Yukon Gold potatoes create a creamy texture with a buttery flavor, but Russet potatoes also mash well and yield fluffy results.

How can I thicken the cooking liquid for gravy?

Remove half a cup of the cooking liquid, whisk it with cornstarch, then stir it back and cook on high until thickened.

Is it possible to use the slow cooker liquid for sauce?

Yes, the slow cooker liquid becomes a rich, savory jus perfect for drizzling over the beef and mashed potatoes.

Can I prepare this dish gluten-free?

Using gluten-free beef broth and Worcestershire sauce ensures the dish remains gluten-free without sacrificing flavor.

Slow Cooker Pot Roast

Tender beef slow-cooked with savory vegetables, paired with creamy mashed potatoes for a classic hearty meal.

Prep time
20 min
Time to cook
480 min
Total duration
500 min
Created by Willie Cooper


Skill level Easy

Cuisine American

Total yield 6 Number of servings

Dietary notes No gluten

What You'll Need

Pot Roast

01 3 lbs beef chuck roast
02 1 tbsp kosher salt
03 1 tsp black pepper
04 2 tbsp olive oil
05 1 large onion, sliced
06 4 cloves garlic, minced
07 4 large carrots, peeled and cut into 2-inch pieces
08 3 celery stalks, cut into 2-inch pieces
09 2 cups beef broth (gluten-free if needed)
10 2 tbsp tomato paste
11 1 tbsp Worcestershire sauce (gluten-free if needed)
12 1 tsp dried thyme
13 1 tsp dried rosemary
14 2 bay leaves

Mashed Potatoes

01 2 lbs Yukon Gold or Russet potatoes, peeled and cut into chunks
02 4 tbsp unsalted butter
03 1/2 cup whole milk (plus more as needed)
04 1 tsp salt
05 1/2 tsp black pepper

Optional Garnish

01 Chopped fresh parsley

How to make it

Step 01

Season the roast: Pat the beef chuck roast dry and season all sides evenly with kosher salt and black pepper.

Step 02

Sear the beef: Heat olive oil in a large skillet over medium-high heat. Brown the roast on all sides, approximately 3 to 4 minutes per side, then transfer it to the slow cooker.

Step 03

Add vegetables: Arrange sliced onion, minced garlic, carrots, and celery around the seared roast in the slow cooker.

Step 04

Mix and pour broth mixture: In a bowl, whisk together beef broth, tomato paste, Worcestershire sauce, dried thyme, dried rosemary, and bay leaves. Pour the mixture over the roast and vegetables.

Step 05

Slow cook: Cover and cook on low heat for 8 hours until the beef is fork-tender.

Step 06

Prepare mashed potatoes: Approximately 40 minutes before serving, place peeled potato chunks into a large pot. Cover with cold water and add 1 tsp salt. Bring to a boil, reduce heat, and simmer for 15 to 20 minutes until tender. Drain thoroughly.

Step 07

Mash potatoes: Return drained potatoes to the pot. Add unsalted butter and whole milk. Mash until smooth and creamy. Season with salt and black pepper to taste. Add additional milk as needed to reach desired consistency.

Step 08

Rest and shred beef: Remove roast from the slow cooker and let rest for 5 minutes. Discard bay leaves. Shred or slice the beef as preferred.

Step 09

Plate and serve: Serve the shredded beef and vegetables atop the mashed potatoes. Drizzle with pan juices and garnish with chopped fresh parsley if desired.

Tools you'll need

  • Slow cooker (6-quart or larger)
  • Large skillet
  • Chef's knife and cutting board
  • Large pot
  • Potato masher or ricer
  • Measuring cups and spoons

Allergy details

Review ingredients for potential allergens and ask a medical expert if unsure.
  • Contains dairy from butter and milk
  • Worcestershire sauce may contain anchovies (fish)
  • Ensure gluten-free beef broth and Worcestershire sauce to maintain gluten-free status

Nutrition Details (per serving)

This nutritional info is for reference only. For health questions, check with a medical professional.
  • Energy: 520
  • Fats: 23 g
  • Carbohydrates: 36 g
  • Proteins: 44 g