Slow-Cooked Pot Roast with Rich Gravy Over Creamy Mashed Potatoes

This classic slow-cooked pot roast is fall-apart tender, packed with deep savory flavor, and smothered in a rich homemade gravy. Served over creamy mashed potatoes, it’s the ultimate comfort food—perfect for Sunday dinners, family gatherings, or anytime you want a hearty, satisfying meal.

Ingredients

For the Pot Roast

3–4 lb chuck roast
2 teaspoons salt (adjust to taste)
1½ teaspoons freshly ground black pepper
2 tablespoons olive oil
1 large onion, sliced
4 cloves garlic, minced
3 carrots, peeled and cut into large chunks
3 celery stalks, cut into chunks
2 cups beef broth (low sodium preferred)
1 cup red wine (optional, can substitute more broth)
2 tablespoons tomato paste
2 tablespoons Worcestershire sauce
2 teaspoons fresh thyme (or 1 teaspoon dried)
1 teaspoon dried rosemary
2 bay leaves

For the Gravy

3 tablespoons butter
3 tablespoons all-purpose flour
Reserved cooking liquid from the pot roast

For the Creamy Mashed Potatoes

2½ lbs Yukon Gold or Russet potatoes, peeled and cubed
4 tablespoons butter
½–¾ cup warm milk or heavy cream
Salt and pepper, to taste

Instructions

Step 1: Season and Sear the Roast

Pat the chuck roast dry with paper towels. Season generously on all sides with salt and black pepper.

Heat olive oil in a large Dutch oven or heavy-bottomed pot over medium-high heat. Once hot, sear the roast for 3–4 minutes per side until a deep brown crust forms. This step builds flavor—don’t rush it. Remove the roast and set aside.

Step 2: Build the Flavor Base

In the same pot, add the sliced onion and cook for 3–4 minutes until softened and lightly browned. Stir in the garlic and cook for 30 seconds until fragrant.

Add tomato paste and cook for 1 minute to deepen its flavor. Deglaze the pot with red wine (if using), scraping up all the browned bits from the bottom. Let it simmer for 2–3 minutes.

Step 3: Slow Cook the Pot Roast

Return the roast to the pot. Add carrots, celery, beef broth, Worcestershire sauce, thyme, rosemary, and bay leaves.

Cover and cook:

Oven method: 300°F (150°C) for 3½–4 hours
Slow cooker: Low for 8 hours or High for 5 hours

The roast is ready when it’s fork-tender and easily pulls apart.

Step 4: Make the Gravy

Remove the roast and vegetables and keep warm. Strain the cooking liquid if desired.

In a saucepan, melt butter over medium heat. Whisk in flour and cook for 1–2 minutes until lightly golden. Gradually whisk in the reserved cooking liquid, stirring constantly until thick and smooth. Simmer for 5 minutes. Adjust seasoning with salt and pepper.

Step 5: Prepare the Creamy Mashed Potatoes

Boil potatoes in salted water for 15–20 minutes until fork-tender. Drain well.

Mash potatoes with butter, then slowly add warm milk or cream until smooth and creamy. Season with salt and pepper to taste.

To Serve

Spoon mashed potatoes onto plates, top with chunks of tender pot roast, roasted vegetables, and generously ladle with rich gravy. Serve hot.

Tips for the Best Pot Roast

Chuck roast is key — it becomes tender only with slow cooking
Let the roast rest 10 minutes before slicing
For extra flavor, add mushrooms or pearl onions
Tastes even better the next day

Storage & Reheating

Store leftovers in an airtight container for up to 4 days
Reheat gently on the stovetop or in the oven with a little broth