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Home » Slow Cooker Beef Recipes

French Onion Pot Roast in Slow Cooker

Published: Jan 23, 2026 by Alexis · This post may contain affiliate links · Leave a Comment

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This slow cooker French Onion Pot Roast is made with chuck roast, caramelized onions, and French onion soup mix. It cooks low and slow in a rich delicious gravy until the beef is perfectly fork-tender.

french onion pot roast in the slow cooker

This recipe is so easy to make and the savory, shreddy beef is great in:

  • hot sandwiches with a side of gravy for dipping
  • burritos and quesadillas
  • served over mashed potatoes

This chuck roast makes great leftovers that are super versatile. Just like my Slow Cooker Rump Roast recipe!

Ingredients

ingredients for french onion pot roast
  • Chuck roast
  • French onion soup mix
  • Au Jus packet
  • Beef broth
  • Yellow onions

How To Make It

  • Pat chuck roast dry and season both sides. Sear the roast on both sides until golden brown then place in the Slow Cooker.
browned chuck roast in large cast iron skillet
  • Caramelize onions in the same pan over medium low heat.
caramelized onion in black cast iron skillet
  • While onions are cooking, whisk together beef broth, worcestershire sauce, au jus, and onion soup mix.
  • Place caramelized onions over the chuck roast and pour the broth mixture over.
overhead shot of french onion pot roast in the slow cooker
  • Cover and cook on low for 6-8 hours or until fall apart tender.
black slow cooker on wood countertop
  • Serve as a hot sandwich or piled high over mashed potatoes and enjoy!
french onion pot roast on a hamburger bun

How to Store French Onion Pot Roast

Refrigerator:
Let the pot roast cool completely, then store it in an airtight container with the gravy. Refrigerate for up to 4 days. Keeping the meat submerged in the gravy helps it stay moist and flavorful.

Freezer:
This pot roast freezes very well. Transfer cooled meat and gravy to a freezer-safe container or freezer bag and freeze for up to 3 months. Thaw overnight in the refrigerator before reheating.

Reheating:
Reheat gently on the stovetop over low heat or in the microwave until warmed through. Add a splash of beef broth if needed to loosen the gravy.

slow cooker french onion pot roast

French Onion Pot Roast in Slow Cooker

Alexis
A delicious pot roast made from chuck roast, caramelized onions, and onion soup mix that cooks low in slow in the crock pot until fork tender.
Print Recipe Pin Recipe
Prep Time 20 minutes mins
Cook Time 6 hours hrs
Total Time 6 hours hrs 20 minutes mins
Course Main Course
Cuisine American
Servings 8

Equipment

  • 1 Slow Cooker

Ingredients
  

  • 2 tablespoon olive oil
  • 3 lb chuck roast
  • 1 French onion soup packet
  • 1 Au Jus packet
  • 1 tablespoon worcestershire sauce
  • 1 cup beef broth
  • salt and pepper

Instructions
 

  • Pat chuck roast dry and season both sides with salt and pepper.
  • Brown the roast in a large pan on both sides until deep golden brown. Transfer to the slow cooker.
  • Cook sliced onions in the same pan for 10 minutes on medium-low heat. Place on top of the browned roast.
  • Whisk together beef broth, worcestershire sauce, Au Jus, and French onion soup packet. Pour over the roast and onions.
  • Cook on low for 6-8 hours or until fall apart tender. Serve over mashed potatoes or on your favorite bread as a sandwich and enjoy!
Keyword chuck roast, slow cooker

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    Slow Cooker Rump Roast
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    Slow Cooker Poor Man’s Stew
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    Easy Slow Cooker Osso Buco - with Beef Shanks

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Alexis smiling in her kitchen

Howdy! I’m Alexis

I specialize in easy to make beef dishes that are fit for hungry cowboys.

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