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Crockpot Pot Roast with Mushrooms

Crockpot Pot Roast with Mushrooms


  • Author: OliviaBennett

Description

Transform a humble chuck roast into melt-in-your-mouth, umami-rich comfort food with minimal hands-on effort. Slow-cooked beef, savory mushrooms, and a rich, flavorful sauce served over creamy polenta = instant family favorites.


Ingredients

Scale

For the Pot Roast

  • 34 lb beef chuck roast

  • 1 tbsp olive oil (or avocado oil)

  • 1 onion, sliced

  • 4 cloves garlic, minced

  • 2 cups mushrooms, sliced (cremini or button)

  • 1½ cups beef broth

  • 2 tbsp Worcestershire sauce

  • 1 tbsp tomato paste

  • 1 tsp dried thyme (or 23 sprigs fresh)

  • Salt & pepper, to taste

  • Optional: chopped parsley for garnish

For Serving

  • Creamy polenta (or mashed potatoes/egg noodles)


Instructions

  1. Sear the Roast:
    Pat roast dry and season generously with salt and pepper. Heat oil in a large skillet over medium-high heat. Sear roast 3–4 minutes per side until a deep brown crust forms. Transfer to crockpot.

  2. Prepare Aromatics:
    Slice onion and mushrooms, and mince garlic.

  3. Deglaze the Pan (Optional but Flavorful):
    Sauté onions and mushrooms in the skillet 2–3 minutes. Pour in ¼ cup beef broth and scrape up all browned bits. Pour this mixture over the roast in the crockpot.

  4. Build the Braise:
    Add remaining beef broth, garlic, Worcestershire sauce, tomato paste, and thyme to the crockpot. Stir gently. The liquid should come about halfway up the roast.

  5. Cook Low & Slow:

    • LOW: 8–9 hours

    • HIGH: 4–5 hours
      Roast is done when it easily shreds with a fork.

  6. Shred & Adjust:
    Remove roast and shred with two forks. Return to crockpot with mushrooms and onions. Taste and adjust seasoning.

  7. Serve:
    Spoon creamy polenta into bowls, top with shredded pot roast and mushrooms, and ladle sauce generously. Garnish with parsley.

Notes

  • Thicker Sauce: Whisk 2 tbsp cornstarch + 2 tbsp cold water into sauce and cook HIGH 15–20 minutes. Or simmer on stovetop until reduced.

  • Prep Ahead: Sear roast and chop veggies the night before; store separately in fridge. Assemble in the morning.

  • Extra Veggies: Add carrots, celery, or parsnips in the last 2–3 hours of cooking.

  • Red Wine Upgrade: Replace ½ cup broth with dry red wine for a richer sauce.

  • Gluten-Free: Use a certified gluten-free Worcestershire sauce.