Slow Cooker Pot Roast

Featured in: Homemade Comforts

This dish features a succulent beef chuck roast seasoned and seared before being slow-cooked alongside onions, garlic, carrots, and celery. A flavorful broth with tomato paste, Worcestershire sauce, and herbs enhances the rich gravy. Served with creamy Yukon Gold or Russet mashed potatoes, the meal offers a warm, comforting combination perfect for family dinners. Optional parsley garnish adds freshness to the hearty plate.

Updated on Thu, 13 Nov 2025 12:05:00 GMT
Tender Slow Cooker Pot Roast resting on fluffy mashed potatoes, ready to be served. Save
Tender Slow Cooker Pot Roast resting on fluffy mashed potatoes, ready to be served. | oventhyme.com

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

Making pot roast in the slow cooker was a game-changer for my busy weekends. I love how simple it is to let the aroma fill the house as everything cooks to perfection while you enjoy time with family.

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
  • Optional garnish: Chopped fresh parsley

Instructions

Season and Sear the Beef:
Pat the beef chuck roast dry and season all sides with salt and pepper. In a large skillet, heat olive oil over medium high heat. Sear the roast on all sides until browned (about 3 to 4 minutes per side). Transfer to the slow cooker.
Add Vegetables:
Add onion, garlic, carrots, and celery around the roast in the slow cooker.
Mix and Pour Liquid:
In a bowl, whisk together beef broth, tomato paste, Worcestershire sauce, thyme, rosemary, and bay leaves. Pour over the roast and vegetables.
Slow Cook:
Cover and cook on low for 8 hours, or until the beef is fork tender.
Prepare Mashed Potatoes:
About 40 minutes before serving, 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 to 20 minutes). Drain well and return potatoes to the pot. Add butter and milk, then mash until smooth and creamy. Season with salt and pepper. Add more milk if needed for desired consistency.
Rest and Slice the Beef:
Remove the roast from the slow cooker and let rest for 5 minutes. Discard bay leaves. Shred or slice the beef.
Serve:
Serve pot roast and vegetables over mashed potatoes. Drizzle with pan juices and garnish with parsley if desired.
Fork-tender Slow Cooker Pot Roast with vegetables and a generous serving of creamy mashed potatoes. Save
Fork-tender Slow Cooker Pot Roast with vegetables and a generous serving of creamy mashed potatoes. | oventhyme.com

Every winter, my kids ask for this pot roast after a long day at school. Sharing it around the table brings back memories of my grandmother's kitchen and everyone smiling for seconds.

Required Tools

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

Allergen Information

Contains dairy (butter, milk). Worcestershire sauce may contain anchovies (fish). Always verify ingredient labels for allergens.

Nutritional Information

Calories: 520, Total Fat: 23 g, Carbohydrates: 36 g, Protein: 44 g (per serving)

Hearty American dinner: a steaming plate of Slow Cooker Pot Roast and beautifully textured mashed potatoes. Save
Hearty American dinner: a steaming plate of Slow Cooker Pot Roast and beautifully textured mashed potatoes. | oventhyme.com

Serve this comforting pot roast for cozy gatherings or a special Sunday dinner. Leftovers make fantastic sandwiches the next day.

Kitchen Guide

What cut of beef works best for this dish?

Beef chuck roast is ideal due to its marbling and texture, which becomes tender when slow-cooked low and slow.

Can I use Russet potatoes instead of Yukon Gold?

Yes, Russet potatoes work well, offering a fluffy texture in the mashed potatoes, though Yukon Gold yields a creamier finish.

How can I thicken the gravy?

Remove some cooking liquid, whisk it with cornstarch, then stir it back and cook on high for 10 minutes to thicken.

Is it possible to add red wine for flavor?

Substitute half a cup of broth with red wine like Cabernet Sauvignon to enhance richness in the sauce.

What herbs complement the pot roast?

Dried thyme, rosemary, and bay leaves provide aromatic depth and balance the savory flavors perfectly.

Slow Cooker Pot Roast

Hearty beef slow-cooked with vegetables and creamy mashed potatoes for a classic comfort meal.

Prep duration
20 min
Kitchen time
480 min
Complete duration
500 min
Created by Grace Mitchell


Skill level Easy

Heritage American

Output 6 Portions

Dietary requirements 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 gluten-free beef broth
10 2 tbsp tomato paste
11 1 tbsp gluten-free Worcestershire sauce
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 ½ cup whole milk (plus more as necessary)
04 1 tsp salt
05 ½ tsp black pepper

Optional Garnish

01 Chopped fresh parsley

Method

Phase 01

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

Phase 02

Sear the Roast: Heat olive oil in a large skillet over medium-high heat. Sear the roast on all sides until well browned, approximately 3 to 4 minutes per side. Transfer to the slow cooker.

Phase 03

Add Vegetables: Arrange sliced onion, minced garlic, carrots, and celery around the roast within the slow cooker.

Phase 04

Prepare and Pour Sauce: Whisk together beef broth, tomato paste, Worcestershire sauce, dried thyme, dried rosemary, and bay leaves in a bowl. Pour this mixture over the roast and vegetables.

Phase 05

Slow Cook: Cover the slow cooker and cook on low heat for 8 hours, or until the beef is tender enough to shred with a fork.

Phase 06

Boil Potatoes: About 40 minutes prior to serving, place potato chunks in a large pot covered with cold water and add 1 tsp salt. Bring to a boil, then reduce heat to a simmer and cook until potatoes are very tender, approximately 15 to 20 minutes.

Phase 07

Drain and Mash Potatoes: Drain potatoes thoroughly and return them to the pot. Add unsalted butter and whole milk. Mash until smooth and creamy. Adjust seasoning with salt and black pepper, adding more milk if needed for desired consistency.

Phase 08

Rest and Slice Beef: Remove the roast from the slow cooker and allow it to rest for 5 minutes. Discard bay leaves, then shred or slice the beef as preferred.

Phase 09

Plate and Garnish: Serve the beef and cooked vegetables on a bed of mashed potatoes. Drizzle with pan juices and garnish with chopped fresh parsley if desired.

Kitchen tools needed

  • 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 notes

Always review ingredients for potential allergens and seek professional medical advice when uncertain.
  • Contains dairy (butter, milk).
  • Worcestershire sauce may contain anchovies (fish).
  • Gluten-free if gluten-free broth and Worcestershire sauce are used.

Nutrition breakdown (per portion)

Values shown are estimates only - consult healthcare providers for specific advice.
  • Energy: 520
  • Fats: 23 g
  • Carbohydrates: 36 g
  • Proteins: 44 g