Slow Cooker Pot Roast

Featured in: Savory Quick Bites

This dish features a tender beef chuck cooked slowly alongside onions, garlic, carrots, and celery in a flavorful broth enriched with tomato paste and herbs. The roast is seared first to lock in juices, then slow-cooked until fork-tender. Creamy mashed potatoes made with Yukon Gold or Russet potatoes, butter, and milk complement the beef perfectly. A drizzle of pan juices and fresh parsley garnish enhance the comforting, hearty flavors for a fulfilling meal that’s easy to prepare.

Updated on Sun, 09 Nov 2025 10:29:00 GMT
Slow Cooker Pot Roast with Mashed Potatoes, served with savory gravy and vibrant vegetables. Save
Slow Cooker Pot Roast with Mashed Potatoes, served with savory gravy and vibrant vegetables. | collationspot.com

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

I remember making this pot roast for a Sunday family dinner & the aroma filled our home all day. The tenderness of the beef & creamy potatoes turned an ordinary evening into a cozy meal everyone looked forward to.

Ingredients

  • Beef chuck roast: 3 lbs (1.4 kg), provides tender, juicy meat after slow cooking
  • Kosher salt: 1 tbsp, enhances flavor
  • Black pepper: 1 tsp, for seasoning
  • Olive oil: 2 tbsp, for searing the meat
  • 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), use gluten-free if needed
  • Tomato paste: 2 tbsp, adds depth to the gravy
  • Worcestershire sauce: 1 tbsp, gluten-free if needed
  • Dried thyme: 1 tsp
  • Dried rosemary: 1 tsp
  • Bay leaves: 2
  • Potatoes: 2 lbs (900 g) Yukon Gold or Russet, peeled and cut into chunks
  • Unsalted butter: 4 tbsp, for mashed potatoes
  • Whole milk: ½ cup (120 ml), plus more as needed
  • Salt for potatoes: 1 tsp
  • Black pepper for potatoes: ½ tsp
  • Chopped parsley (optional): fresh, for garnish

Instructions

Prepare and season beef:
Pat the beef chuck roast dry and season all sides with salt and pepper.
Sear the roast:
Heat olive oil in a large skillet over medium high heat. Sear the roast on all sides until browned (about 3 minutes per side). Transfer to the slow cooker.
Add vegetables:
Arrange onion, garlic, carrots, and celery around the roast in the slow cooker.
Mix liquid and pour:
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.
Mashed potatoes prep:
About 40 minutes before serving, place potatoes in a large pot, cover with cold water, and add 1 tsp salt. Bring to a boil, reduce heat, and simmer until potatoes are very tender (15 to 20 minutes).
Mash potatoes:
Drain well and return potatoes to the pot. Add butter and milk, then mash until smooth and creamy. Season with salt and pepper to taste. Add more milk if needed for desired consistency.
Finish roast:
Remove roast from the slow cooker and let rest for 5 minutes. Discard bay leaves. Shred or slice the beef as desired.
Serve:
Plate 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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| collationspot.com

Gathering around this meal, my kids love to help mash the potatoes and sprinkle parsley on top—it turns dinner into a family affair.

Required Tools

You will need a slow cooker (6 quart or larger), a large skillet, chefs knife, cutting board, large pot, potato masher or ricer, and measuring cups and spoons for preparation.

Allergen Information

This recipe contains dairy (butter, milk) and potentially fish via Worcestershire sauce. Gluten-free if gluten-free broth and sauce are used; always check labels for allergens.

Nutritional Information

Per serving: 520 calories, 23 g fat, 36 g carbohydrates, 44 g protein. Nutrition may vary depending on ingredient choices.

Tender Slow Cooker Pot Roast with Mashed Potatoes, garnished with fresh parsley and rich broth. Save
Tender Slow Cooker Pot Roast with Mashed Potatoes, garnished with fresh parsley and rich broth. | collationspot.com

Try this slow cooker pot roast for your next Sunday dinner—it&s sure to become a comfort food family favorite.

Recipe Help

What cut of beef is best for slow cooking?

Beef chuck roast is ideal due to its marbling and connective tissues, which break down during long cooking, resulting in tender meat.

How do I achieve tender vegetables in slow cooking?

Add vegetables like carrots, onions, and celery around the meat early, allowing them to soften and absorb flavors over several hours.

Can I use different potatoes for the mashed side?

Yes, Yukon Gold potatoes yield creamy, buttery mash, while Russet potatoes provide a fluffy texture; both work well.

How can I thicken the cooking liquid into gravy?

Remove some liquid, whisk with cornstarch, then stir back in and cook on high for about 10 minutes until thickened.

Is it possible to enhance the flavor with wine?

Substituting half a cup of beef broth with red wine, such as Cabernet Sauvignon, adds richness to the flavor profile.

Slow Cooker Pot Roast

Hearty slow-cooked beef chuck with vegetables and creamy mashed potatoes for a satisfying dinner.

Prep Time
20 min
Time to Cook
480 min
Overall Time
500 min
Created by Chloe Martin


Skill Level Easy

Cuisine Type American

Makes 6 Portions

Special Diets None specified

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 ½ cup whole milk (plus more as needed)
04 1 tsp salt
05 ½ tsp black pepper

Optional Garnish

01 Chopped fresh parsley

How-To

Step 01

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

Step 02

Sear the Meat: Heat olive oil in a large skillet over medium-high heat. Brown the roast on all sides, about 3–4 minutes each, then transfer to the slow cooker.

Step 03

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

Step 04

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

Step 05

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

Step 06

Cook Potatoes: About 40 minutes before serving, place potatoes in a large pot, cover with cold water and add 1 tsp salt. Bring to a boil, then reduce heat and simmer until tender, 15–20 minutes. Drain well.

Step 07

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

Step 08

Rest and Serve: Remove the roast from the slow cooker and discard bay leaves. Let rest for 5 minutes, then shred or slice the meat. Serve roast and vegetables atop mashed potatoes. Drizzle with pan juices and garnish with fresh parsley if desired.

Gear 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 every item for allergens and connect with your healthcare provider if you’re unsure.
  • Contains dairy from butter and milk
  • Worcestershire sauce may contain anchovies (fish)
  • Gluten-free if gluten-free broth and Worcestershire sauce are used; verify labels carefully

Nutrition Breakdown (each serving)

Info for reference only—don’t take this as expert medical guidance.
  • Caloric Value: 520
  • Lipids: 23 g
  • Carbohydrates: 36 g
  • Proteins: 44 g