Slow Cooker Pot Roast Mashed

Featured in: Comfort Food Favorites

Enjoy a classic meal featuring slow-cooked beef chuck roast simmered with vegetables and aromatic herbs. The rich pan juices blend perfectly with tender carrots and celery, creating a flavorful plate. Creamy Yukon Gold or Russet potatoes are mashed with butter and milk for a smooth texture, complimenting the beef and vegetables. This dish is easy to prepare, offering delicious comfort on busy days. It's naturally gluten-free if you use gluten-free broth and Worcestershire sauce. Add chopped parsley for color and freshness before serving.

Updated on Sat, 08 Nov 2025 10:15:00 GMT
Slow Cooker Pot Roast with Mashed Potatoes served with rich gravy and fresh herbs.  Save It
Slow Cooker Pot Roast with Mashed Potatoes served with rich gravy and fresh herbs. | zetluna.com

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

I first learned to make pot roast in my grandmother&s kitchen, where the slow cooker worked its magic to create tender beef and the comfort of creamy potatoes. It quickly became a favorite family meal, bringing us together every Sunday.

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: 3 stalks, 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

Season and Sear:
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 3–4 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:
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 (15–20 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.
Finish Roast:
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 a bed of mashed potatoes. Drizzle with pan juices and garnish with fresh parsley if desired.
Tender Slow Cooker Pot Roast accompanied by creamy mashed potatoes and fresh vegetables.  Save It
Tender Slow Cooker Pot Roast accompanied by creamy mashed potatoes and fresh vegetables. | zetluna.com

The aroma from the slow cooker fills the house every time I make this pot roast, reminding my family of cozy evenings and bringing everyone to the table eager for dinner.

Required Tools

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

Allergen Information

Contains dairy from butter and milk. Worcestershire sauce may contain fish. To keep gluten-free, use suitable broth and sauce, and check all labels.

Nutritional Information

Each serving contains about 520 calories, 23 g fat, 36 g carbohydrates, and 44 g protein.

Aromatic Slow Cooker Pot Roast garnished with parsley, nestled on buttery mashed potatoes. Save It
Aromatic Slow Cooker Pot Roast garnished with parsley, nestled on buttery mashed potatoes. | zetluna.com

This slow cooker pot roast is perfect for meal prep and tastes even better the next day. Gather your loved ones and enjoy this classic comfort dish together.

Common Questions About Recipes

What cut of beef works best?

Chuck roast is ideal thanks to its marbling which results in tender, flavorful meat after slow cooking.

Can I make this dairy-free?

Substitute plant-based butter and milk for the mashed potatoes to create a dairy-free version.

How can I make the gravy thicker?

Whisk cornstarch into hot liquid from the cooker, then stir back and cook on high for 10 minutes.

Is this dish gluten-free?

Use gluten-free beef broth and Worcestershire sauce for a naturally gluten-free meal.

Can I add wine for flavor?

Replace half a cup of broth with red wine to deepen the flavor of the sauce and meat.

What's the best potato for mashing?

Yukon Gold potatoes offer creamy texture, while Russet potatoes yield a fluffy consistency.

Slow Cooker Pot Roast Mashed

Tender beef roast pairs with creamy mashed potatoes for a hearty, satisfying meal.

Prep Time
20 mins
Time to Cook
480 mins
Overall Time
500 mins
Authored by Clara


Skill Level Required Easy

Cuisine Type American

Recipe Output 6 Number of Portions

Dietary Needs Free of Gluten

The Ingredients You'll Need

Pot Roast

01 3 pounds beef chuck roast
02 1 tablespoon kosher salt
03 1 teaspoon black pepper
04 2 tablespoons 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 tablespoons tomato paste
11 1 tablespoon Worcestershire sauce (gluten-free if needed)
12 1 teaspoon dried thyme
13 1 teaspoon dried rosemary
14 2 bay leaves

Mashed Potatoes

01 2 pounds Yukon Gold or Russet potatoes, peeled and cut into chunks
02 4 tablespoons unsalted butter
03 1/2 cup whole milk
04 1 teaspoon salt
05 1/2 teaspoon black pepper

Optional Garnish

01 Chopped fresh parsley

Step-by-Step Instructions

Step 01

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

Step 02

Sear Beef: Heat olive oil in a large skillet set over medium-high. Sear roast on all sides until a deep brown crust forms, approximately 3 to 4 minutes per side. Transfer seared beef to slow cooker.

Step 03

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

Step 04

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

Step 05

Slow Cook Pot Roast: Cover slow cooker and cook on low heat for 8 hours, until beef is fork-tender and vegetables are soft.

Step 06

Prepare Mashed Potatoes: About 40 minutes before serving, place potatoes in a large pot and cover with cold water. Add 1 teaspoon salt. Bring to a boil, reduce heat and simmer 15 to 20 minutes until potatoes are very tender. Drain well and return potatoes to the pot.

Step 07

Mash Potatoes: Add unsalted butter and whole milk to cooked potatoes. Mash until smooth and creamy using a potato masher or ricer. Season with salt and black pepper; add more milk if needed to achieve desired consistency.

Step 08

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

Step 09

Plate and Serve: Spoon creamy mashed potatoes onto plates. Top with pot roast and vegetables. 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
  • Cutting board
  • Large pot
  • Potato masher or ricer
  • Measuring cups and spoons

Allergy Information

Review each ingredient to identify allergens and consult an expert if needed.
  • Contains dairy (butter, milk).
  • Worcestershire sauce may contain anchovies (fish).
  • Gluten-free if using gluten-free beef broth and Worcestershire sauce.
  • Always verify ingredient labels for potential allergens.

Nutritional Facts (Per Serving)

Keep in mind these details are for general guidance and shouldn't replace professional advice.
  • Caloric Content: 520
  • Fats: 23 grams
  • Carbohydrates: 36 grams
  • Proteins: 44 grams