Slow Cooker Pot Roast

Featured in: Dinner Grin

This dish features a beef chuck roast slow-cooked until fork-tender with onions, garlic, carrots, celery, and a blend of herbs. Rich tomato paste and Worcestershire sauce enrich the savory broth cooked for hours to develop deep flavors. Served with creamy mashed Yukon Gold potatoes made smooth with butter and milk, this comforting meal delivers classic American comfort and satisfying textures perfect for family dinners.

Updated on Thu, 13 Nov 2025 10:32:00 GMT
Tender Slow Cooker Pot Roast pictured, served with creamy mashed potatoes and flavorful gravy. Save
Tender Slow Cooker Pot Roast pictured, served with creamy mashed potatoes and flavorful gravy. | grinnosh.com

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

I remember preparing this slow cooker pot roast for my family on chilly weekends when we wanted something warm and filling. Everyone looked forward to the aroma of beef and herbs wafting through our home all day.

Ingredients

  • Beef chuck roast: 3 lbs (1.4 kg), well-marbled for tenderness
  • Kosher salt: 1 tbsp for seasoning meat and potatoes
  • Black pepper: 1 tsp for seasoning
  • Olive oil: 2 tbsp, for searing the beef
  • Onion: 1 large, sliced
  • Garlic: 4 cloves, minced
  • Carrots: 4 large, peeled and cut into 2 inch pieces
  • Celery: 3 stalks, cut into 2 inch pieces
  • Beef broth: 2 cups (480 ml), gluten-free if needed
  • Tomato paste: 2 tbsp for depth of flavor
  • 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 chunked
  • Unsalted butter: 4 tbsp for mashed potatoes
  • Whole milk: ½ cup (120 ml), plus more if needed
  • Salt: 1 tsp for boiling potatoes
  • Black pepper: ½ tsp for mashed potatoes
  • Optional garnish: Chopped fresh parsley

Instructions

Season and Sear Beef:
Pat chuck roast dry and season all sides with salt and pepper. In a large skillet, heat olive oil over medium-high. Sear roast on all sides until browned (about 3 to 4 minutes each side). Transfer to slow cooker.
Add Vegetables:
Add onion, garlic, carrots, and celery around the roast in the slow cooker.
Mix and Pour Sauce:
In a bowl, whisk together beef broth, tomato paste, Worcestershire sauce, thyme, rosemary, and bay leaves. Pour mixture over roast and vegetables.
Slow Cook:
Cover and cook on low for 8 hours until 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, and simmer until tender (15 to 20 minutes). Drain and return to pot. Add butter and milk; mash until smooth and creamy. Season with salt and pepper. Add more milk for desired consistency.
Rest, Slice, and Serve:
Remove roast from slow cooker and let rest for 5 minutes. Discard bay leaves. Shred or slice beef. Serve beef and vegetables over mashed potatoes. Drizzle with pan juices, garnish with parsley if desired.
A delicious, steaming bowl of Slow Cooker Pot Roast, perfect for a cozy Sunday dinner. Save
A delicious, steaming bowl of Slow Cooker Pot Roast, perfect for a cozy Sunday dinner. | grinnosh.com

Sharing this meal always brings back memories of quiet Sunday evenings, gathered around the table with my family, savoring every bite and enjoying our time together.

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 from butter and milk. Worcestershire sauce may include fish. Use gluten-free broth and Worcestershire sauce for a gluten-free dish. Always verify labels for allergens.

Nutritional Information

Per serving: 520 calories, 23 g total fat, 36 g carbohydrates, 44 g protein

Fork-tender beef with vegetables, pictured alongside fluffy mashed potatoes in Slow Cooker Pot Roast. Save
Fork-tender beef with vegetables, pictured alongside fluffy mashed potatoes in Slow Cooker Pot Roast. | grinnosh.com

This classic pot roast and mashed potatoes recipe is pure comfort, perfect for slow Sunday suppers. The leftovers taste just as delicious the next day.

Recipe FAQ

How do I ensure the beef stays tender during cooking?

Choose a beef chuck roast and cook it low and slow in the slow cooker for about 8 hours, allowing the connective tissues to break down resulting in tender meat.

What type of potatoes work best for the creamy mash?

Yukon Gold potatoes are ideal for creamy mashed potatoes due to their buttery texture, but Russet potatoes are also a good alternative.

Can I make the gravy thicker?

Remove half a cup of cooking liquid, whisk it with cornstarch, then return it to the slow cooker and cook on high for 10 minutes to thicken.

Is it possible to add red wine to this dish?

Yes, substituting half a cup of broth with a bold red wine like Cabernet Sauvignon adds richness to the flavor profile.

How should I prepare the vegetables for cooking?

Slice onions, mince garlic, and cut carrots and celery into 2-inch pieces to allow even cooking and flavor infusion during the slow cooking process.

What is the best way to serve the dish?

Serve the tender beef and vegetables over a bed of creamy mashed potatoes, garnished with fresh parsley and drizzled with pan juices for added moisture.

Slow Cooker Pot Roast

Savory beef slow-cooked with herbs and veggies, served alongside smooth mashed potatoes.

Prep duration
20 min
Cook duration
480 min
Complete duration
500 min
Created by Hannah Lewis


Skill level Easy

Heritage American

Output 6 Portions

Dietary 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

Directions

Stage 01

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

Stage 02

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

Stage 03

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

Stage 04

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

Stage 05

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

Stage 06

Cook Mashed Potatoes: Approximately 40 minutes before serving, place peeled potato chunks 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, about 15–20 minutes. Drain thoroughly.

Stage 07

Mash Potatoes: Return drained potatoes to the pot, add butter and whole milk, then mash until smooth and creamy. Season with salt and black pepper to taste. Add additional milk as needed for desired consistency.

Stage 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.

Stage 09

Serve: Plate the pot roast and vegetables over a bed of mashed potatoes. Drizzle with pan juices from the slow cooker and garnish with chopped fresh parsley if desired.

Necessary tools

  • 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 each component for potential allergens and consult with healthcare professionals if you're uncertain about ingredients.
  • Contains dairy (butter, milk).
  • Worcestershire sauce may contain anchovies (fish).
  • Gluten-free when using gluten-free beef broth and Worcestershire sauce.
  • Verify ingredient labels for allergens.

Nutrient content (per portion)

These values are approximate guidelines only and shouldn't replace professional nutritional advice.
  • Energy: 520
  • Fats: 23 g
  • Carbohydrates: 36 g
  • Proteins: 44 g