Slow Cooker Pot Roast

Featured in: One-Pot Comforts

This comforting dish features a beef chuck roast seasoned and seared before slow-cooking alongside aromatic vegetables and herbs. The slow cooking results in tender, flavorful meat infused with a rich gravy crafted from broth, tomato paste, and Worcestershire sauce. Creamy mashed potatoes made with butter and milk accompany the roast, rounding out a satisfyingly hearty and classic meal. Garnish with fresh parsley for a touch of color and freshness.

The preparation involves searing the beef to lock in juices, layering vegetables for depth, and a slow, low heat to transform the dish into a melt-in-your-mouth experience. The mashed potatoes provide a smooth, buttery balance to the savory roast and gravy components.

Updated on Thu, 13 Nov 2025 16:51:00 GMT
Tender slow cooker pot roast with vegetables and creamy mashed potatoes, ready to serve. Save
Tender slow cooker pot roast with vegetables and creamy mashed potatoes, ready to serve. | blipbite.com

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

I have always loved making this slow cooker pot roast for family gatherings because it brings everyone together around the table and creates delicious leftovers for the next day.

Ingredients

  • Beef chuck roast (3 lbs, 1.4 kg): The main protein for the pot roast
  • Kosher salt (1 tbsp): Seasoning for the beef
  • Black pepper (1 tsp): Adds mild heat and flavor
  • Olive oil (2 tbsp): Used to sear the roast before slow cooking
  • Large onion, sliced (1): Aromatic base for the roast
  • Garlic, minced (4 cloves): Adds depth of flavor
  • Large carrots, peeled and cut into 2-inch pieces (4): Hearty vegetable for the roast
  • Celery stalks, cut into 2-inch pieces (3): Adds earthiness and texture
  • Beef broth (2 cups, 480 ml): Cooking liquid (use gluten-free if needed)
  • Tomato paste (2 tbsp): Adds richness to the gravy
  • Worcestershire sauce (1 tbsp): Adds depth (gluten-free if needed)
  • Dried thyme (1 tsp): Herbal flavoring
  • Dried rosemary (1 tsp): Complements the beef
  • Bay leaves (2): For classic pot roast aroma
  • Yukon Gold or Russet potatoes, peeled and cut into chunks (2 lbs, 900 g): Used for mashed potatoes
  • Unsalted butter (4 tbsp): For creamy texture in mashed potatoes
  • Whole milk (1/2 cup, 120 ml, plus more as needed): Adds moisture to mashed potatoes
  • Salt (1 tsp): Seasoning for potatoes
  • Black pepper (1/2 tsp): Adds flavor to mashed potatoes
  • Optional garnish, chopped fresh parsley: For a touch of freshness

Instructions

Prepare Beef:
Pat the beef chuck roast dry and season all sides with salt and pepper.
Sear:
In a large skillet, heat olive oil over medium high heat. Sear roast on all sides until browned (about 3 and 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 Liquids and Herbs:
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 and 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.
Rest and Shred Beef:
Remove 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 a bed of mashed potatoes. Drizzle with pan juices and garnish with parsley if desired.
A close-up of a richly flavored, fall-apart pot roast resting atop fluffy mashed potatoes. Save
A close-up of a richly flavored, fall-apart pot roast resting atop fluffy mashed potatoes. | blipbite.com

I remember making this for a Sunday dinner and watching everyone eagerly gather in the kitchen as the aroma filled our home, making it a meal to remember.

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) and may contain fish from Worcestershire sauce. Always verify ingredients for allergies and gluten content.

Nutritional Information

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

Hearty slow cooker pot roast, steaming on a plate, alongside a generous portion of mashed potatoes. Save
Hearty slow cooker pot roast, steaming on a plate, alongside a generous portion of mashed potatoes. | blipbite.com

This slow cooker pot roast with mashed potatoes makes any meal special and is perfect for leftovers the next day.

Kitchen Guide

What cut of beef is best for pot roast?

Beef chuck roast is ideal for slow cooking due to its marbling and connective tissue that breaks down into tender meat.

How do I ensure the meat stays moist during cooking?

Searing the beef before slow cooking seals in juices, and cooking with broth and vegetables helps maintain moisture and flavor.

Can I prepare the mashed potatoes ahead of time?

Mashed potatoes are best made fresh but can be prepared in advance and gently reheated with added milk or butter to restore creaminess.

How do I thicken the gravy made from the cooking liquid?

Remove some cooking liquid and whisk it with cornstarch before stirring it back into the pot and cooking on high until thickened.

Are there suitable substitutions for Worcestershire sauce?

For different flavors or dietary needs, soy sauce or tamari can be used, keeping in mind they alter the dish's profile slightly.

Slow Cooker Pot Roast

Tender beef slow-cooked with vegetables and rich gravy, served alongside creamy mashed potatoes.

Prep duration
20 min
Heat time
480 min
Complete duration
500 min
Created by Megan Lewis


Complexity Easy

Heritage American

Output 6 Portions

Nutrition Guidelines No Gluten

Components

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 ½ cup whole milk, plus additional as needed
04 1 tsp salt
05 ½ tsp black pepper

Optional Garnish

01 Chopped fresh parsley

Method

Phase 01

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

Phase 02

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

Phase 03

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

Phase 04

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

Phase 05

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

Phase 06

Cook Potatoes: About 40 minutes before serving, place peeled potato chunks into a large pot, cover with cold water, and add 1 teaspoon salt. Bring to a boil, reduce heat, and simmer until very tender, approximately 15 to 20 minutes.

Phase 07

Mash Potatoes: Drain potatoes thoroughly, return to the pot, and add unsalted butter and whole milk. Mash until smooth and creamy, seasoning with salt and black pepper to taste. Add more milk as needed to achieve desired consistency.

Phase 08

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

Phase 09

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

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 Details

Review ingredients carefully for potential allergens and seek professional medical guidance if uncertain.
  • Contains dairy from butter and milk.
  • Worcestershire sauce may contain anchovies (fish).
  • Gluten-free if using gluten-free beef broth and Worcestershire sauce.
  • Verify ingredient labels for potential allergens.

Nutrient breakdown (per portion)

Values shown are estimates and shouldn't replace professional medical consultation.
  • Energy: 520
  • Fats: 23 g
  • Carbohydrates: 36 g
  • Proteins: 44 g