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Slow Cooker Beef Roast with Mushrooms and Onion Gravy

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Slow Cooker Beef Roast with Mushrooms and Onion Gravy is a hearty and flavorful dish featuring tender, slow-cooked beef, savory onions, and earthy mushrooms in a rich, comforting gravy. Perfect for weeknights or Sunday dinners with minimal effort.

Ingredients

  • 3–4 lb beef chuck roast
  • 2 yellow onions, sliced
  • 8 oz mushrooms (button or cremini), sliced
  • 3 cloves garlic, minced
  • 2 cups beef broth
  • 1 tbsp Worcestershire sauce
  • 1 tbsp soy sauce (optional)
  • 1 tsp dried thyme or rosemary
  • 2 tbsp cornstarch (or flour)
  • Salt and black pepper to taste
  • 1 tbsp olive oil or butter (for searing, optional)

Instructions

  1. Season the beef roast with salt and pepper. Optionally, sear in a hot skillet with oil until browned on all sides.
  2. Place sliced onions, mushrooms, and garlic in the bottom of the slow cooker.
  3. Set the beef roast on top of the vegetables.
  4. Whisk together beef broth, Worcestershire sauce, soy sauce (if using), and thyme. Pour over the roast.
  5. Cover and cook on low for 8–9 hours or high for 4–5 hours, until beef is fork-tender.
  6. Mix cornstarch with 2 tbsp cold water to create a slurry. Stir into the slow cooker 30 minutes before serving to thicken the gravy.
  7. Shred or slice the beef and gently stir with the mushrooms, onions, and gravy before serving.

Notes

  • Add baby potatoes or carrots for a one-pot meal.
  • Use red wine in place of some broth for deeper flavor.
  • Stir in sour cream or heavy cream at the end for a creamier gravy.
  • If using canned mushrooms, add them halfway through cooking.
  • Chuck roast is the best cut for tender results, but brisket or round roast work too.

Nutrition

Find it online: https://cookedbymaya.com/slow-cooker-beef-roast-with-mushrooms-and-onion-gravy/