Slow Cooker Beef Roast with Mushrooms and Onion Gravy

Slow Cooker Beef Roast with Mushrooms and Onion Gravy is an easy, hands-off dish that makes tender beef and a rich gravy.

introduction — Slow Cooker Beef Roast with Mushrooms and Onion Gravy

This Slow Cooker Beef Roast with Mushrooms and Onion Gravy is great for busy days and cozy dinners.
If you enjoy slow-cooked beef with mushroom sauce, try this related recipe for beef meatballs with onion mushroom gravy and mashed potatoes for another comforting meal.

why make this recipe — Slow Cooker Beef Roast with Mushrooms and Onion Gravy

Make this Slow Cooker Beef Roast with Mushrooms and Onion Gravy because it is:

• Low effort and mostly hands-off.
• Full of savory mushroom and onion flavor.
• Great for feeding a family or meal prep.

how to make Slow Cooker Beef Roast with Mushrooms and Onion Gravy

Follow simple steps to make this Slow Cooker Beef Roast with Mushrooms and Onion Gravy.
Cooking low and slow gives the beef time to break down and soak up the sauce.
For a similar slow-braised method with a twist, see this apple cider braised beef with mushrooms and baby potatoes recipe.

Ingredients — Slow Cooker Beef Roast with Mushrooms and Onion Gravy

For the Roast:

• 2 pounds beef chuck roast, trimmed of excess fat
• 2 cups sliced onions (yellow or red)
• 2 cups sliced mushrooms (cremini or button)
• 3 garlic cloves, minced
• 1 cup beef broth
• ¼ cup tomato sauce
• 1 tablespoon Worcestershire sauce
• 1 tablespoon white or apple cider vinegar
• 1 teaspoon salt
• 1 teaspoon black pepper
• ½ teaspoon fresh thyme, chopped (or ¼ teaspoon dried)
• 2 teaspoons fresh parsley, chopped

For the Gravy (Optional):

• 1 to 2 tablespoons all-purpose flour or cornstarch (for thickening)

Directions — Slow Cooker Beef Roast with Mushrooms and Onion Gravy

Step 1: Prepare the Sauce

• In a bowl, whisk tomato sauce, beef broth, minced garlic, thyme, Worcestershire sauce, and vinegar until smooth. Set aside.

Step 2: Season the Roast

• Pat the chuck roast dry with paper towels.
• Season generously with salt and black pepper on all sides. Trim large fat sections if needed.

Step 3: Assemble the Slow Cooker

• Spread half the onions and half the mushrooms across the slow cooker bottom.
• Pour half the sauce over the vegetables. Place the roast on top.
• Add remaining onions and mushrooms, then pour the rest of the sauce over everything.

Step 4: Cook the Roast

• Cover and cook on LOW for 7–8 hours or HIGH for 4 hours, until the beef pulls apart with a fork.
• The mushrooms and onions will form a flavorful base for the gravy.

Step 5: Make the Gravy (Optional)

• Transfer roast to a platter and keep warm. Pour cooking liquid and vegetables into a saucepan.
• Whisk 1 tablespoon flour or cornstarch per cup of liquid in a small bowl, then add to the pan.
• Simmer over medium heat, stirring, until the sauce thickens to a gravy.

Step 6: Serve and Garnish

• Slice or shred the roast. Spoon mushroom-onion gravy over the top.
• Sprinkle with fresh parsley and serve warm.

how to serve Slow Cooker Beef Roast with Mushrooms and Onion Gravy

Serve the Slow Cooker Beef Roast with Mushrooms and Onion Gravy with:

• Mashed potatoes for soaking up the gravy.
• Buttered noodles, rice, or roasted vegetables for a full plate.
  Garnish with fresh parsley for color and flavor.

how to store Slow Cooker Beef Roast with Mushrooms and Onion Gravy

Store the roast and gravy in an airtight container in the fridge for 3–4 days.
For longer storage, freeze in freezer-safe containers for up to 3 months. Thaw in the fridge overnight before reheating gently.

tips to make Slow Cooker Beef Roast with Mushrooms and Onion Gravy

Use these tips for the best Slow Cooker Beef Roast with Mushrooms and Onion Gravy:

• Brown the roast in a skillet before adding to the slow cooker for extra flavor.
• Slice mushrooms evenly so they cook at the same rate.
• Skim excess fat from the sauce before thickening if needed.
  For another mushroom-and-onion braised style, check this French onion braised beef with mushrooms recipe for ideas.

variation (if any) — Slow Cooker Beef Roast with Mushrooms and Onion Gravy

Simple variations for this Slow Cooker Beef Roast with Mushrooms and Onion Gravy:

• Add baby carrots or potatoes to the slow cooker for a one-pot meal.
• Swap tomato sauce for tomato paste for a deeper flavor.
• Use red wine (¼ cup) in place of some beef broth for richer gravy.

FAQs — Slow Cooker Beef Roast with Mushrooms and Onion Gravy

Q: Can I use a different cut of beef for Slow Cooker Beef Roast with Mushrooms and Onion Gravy?
A: Yes. Chuck roast is best, but brisket or bottom round also work. Choose a cut good for slow cooking.

Q: How do I thicken the gravy for Slow Cooker Beef Roast with Mushrooms and Onion Gravy?
A: Whisk 1 tablespoon flour or cornstarch into 1 cup of the cooking liquid, then simmer until thick. Adjust to desired thickness.

Q: What slow cooker is good for making Slow Cooker Beef Roast with Mushrooms and Onion Gravy?
A: A 6-quart slow cooker fits a 2-pound roast well and gives even cooking. Buy it here

Q: Can I make Slow Cooker Beef Roast with Mushrooms and Onion Gravy ahead of time?
A: Yes. Cook, cool, and refrigerate. Reheat gently and thicken the sauce again if it thins when chilled.

Slow Cooker Beef Roast with Mushrooms and Onion Gravy

This Slow Cooker Beef Roast with Mushrooms and Onion Gravy is great for busy days and cozy dinners, featuring tender beef and a rich mushroom sauce.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 8 hours hrs

Total Time 8 hours hrs 20 minutes mins

Course Dinner, Main Course

Cuisine American, Comfort Food

Servings 6 servings

Calories 400 kcal

Ingredients

  

For the Roast

• 2 pounds beef chuck roast, trimmed of excess fat
• 2 cups sliced onions (yellow or red)
• 2 cups sliced mushrooms (cremini or button)
• 3 cloves garlic, minced
• 1 cup beef broth
• ¼ cup tomato sauce
• 1 tablespoon Worcestershire sauce
• 1 tablespoon white or apple cider vinegar
• 1 teaspoon salt
• 1 teaspoon black pepper
• ½ teaspoon fresh thyme, chopped (or ¼ teaspoon dried)
• 2 teaspoons fresh parsley, chopped

For the Gravy (Optional)

• 1 to 2 tablespoons all-purpose flour or cornstarch (for thickening)

Instructions

 

Preparation

• In a bowl, whisk tomato sauce, beef broth, minced garlic, thyme, Worcestershire sauce, and vinegar until smooth. Set aside.
• Pat the chuck roast dry with paper towels. Season generously with salt and black pepper on all sides. Trim large fat sections if needed.
• Spread half the onions and half the mushrooms across the slow cooker bottom. Pour half the sauce over the vegetables. Place the roast on top.
• Add remaining onions and mushrooms, then pour the rest of the sauce over everything.

Cooking

• Cover and cook on LOW for 7–8 hours or HIGH for 4 hours, until the beef pulls apart with a fork. The mushrooms and onions will form a flavorful base for the gravy.

Making the Gravy (Optional)

• Transfer roast to a platter and keep warm. Pour cooking liquid and vegetables into a saucepan.
• Whisk 1 tablespoon flour or cornstarch per cup of liquid in a small bowl, then add to the pan. Simmer over medium heat, stirring, until the sauce thickens to a gravy.

Serving

• Slice or shred the roast. Spoon mushroom-onion gravy over the top. Sprinkle with fresh parsley and serve warm.

Notes

Store the roast and gravy in an airtight container in the fridge for 3–4 days. For longer storage, freeze in freezer-safe containers for up to 3 months. Thaw in the fridge overnight before reheating gently.

Keyword beef with gravy, Easy Dinner, Family Meal, mushroom gravy, slow cooker beef roast