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The Best Tender & Easy Slow Cooker Beef Pot Roast

Serving the Slow Cooker Beef Pot Roast at a cozy Sunday family dinner.

A classic, hearty beef pot roast made tender and flavorful in a slow cooker. The recipe begins by searing a bone-in beef roast to develop a rich, browned crust. A savory gravy base is created in the same skillet by sautéing mushrooms, onions, and garlic, then thickening it with a flour and tomato paste roux and chicken broth. The seared roast, vegetables like carrots and celery, and the gravy mixture are all combined in a slow cooker and cooked for several hours until the beef is fall-apart tender.

Ingredients

Scale
  • 1 (5 pound) bone-in beef pot roast
  • Salt and pepper to taste
  • 2 ½ tablespoons all-purpose flour, divided
  • 2 tablespoons vegetable oil
  • 1 tablespoon butter
  • 8 ounces sliced mushrooms
  • 1 medium onion, chopped
  • 2 cloves garlic, minced
  • 1 tablespoon tomato paste
  • 2 ½ cups chicken broth
  • 3 medium carrots, cut into chunks
  • 2 stalks celery, cut into chunks
  • 2 sprigs fresh thyme
  • 1 sprig fresh rosemary

Instructions

  1. Generously season the beef roast on both sides with salt and pepper. Sprinkle the top with 1 tablespoon of flour and pat it onto the meat.
  2. Heat the vegetable oil in a large skillet over medium-high heat. Sear the roast for 5 to 6 minutes per side, until well-browned. Remove the roast from the skillet and set it aside.
  3. Reduce the heat to medium. Melt the butter in the same skillet. Add the mushrooms and cook, stirring, for 3 to 4 minutes until tender.
  4. Stir in the onion and cook for about 5 minutes, until translucent and browned. Add the garlic and stir for about 1 minute until fragrant.
  5. Stir in the remaining 1 1/2 tablespoons of flour and cook for 1 minute. Add the tomato paste and cook for another minute.
  6. Slowly pour in the chicken broth while stirring, scraping up any browned bits from the bottom of the pan. Bring the mixture back to a simmer, then remove the skillet from the heat.
  7. Place the carrots and celery in the bottom of a large slow cooker. Place the seared roast on top of the vegetables and pour in any accumulated juices. Add the thyme and rosemary sprigs.
  8. Pour the onion and mushroom mixture from the skillet over the top of the roast.
  9. Cover and cook on HIGH for 5 to 6 hours (or on LOW for 8-10 hours) until the meat is very tender.
  10. Before serving, skim off any fat from the surface of the liquid and remove the bones from the roast. Season with additional salt and pepper to taste.

Notes

  • Searing the roast in a skillet before placing it in the slow cooker is a crucial step that adds a deep, rich, caramelized flavor to the final dish.
  • Building the gravy base in the same skillet used for the roast incorporates all the flavorful browned bits (fond).
  • The long, slow cooking time makes the beef incredibly tender and flavorful.

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