This Slow Cooker French Onion Roast Beef, or Slow Cooker French Onion Pot Roast, is made with a rump roast and homemade or canned French Onion Soup. With just five minutes prep time, it's ready to eat in less than six hours.
We bought and installed a pool this week! Our daughter is turning 4 on July 6th, so it's part of her birthday present, but you can bet that I will be in there, too 🙂 It's only a 30 inch pool (the highest my city will allow without a permit and fencing) but I'm 5 Ft tall, so half my height works for me! It really is a lot bigger than it sounds.
Now with the addition of the pool, my summer's are going to be more busy than they already are. In the summer, I need quick and easy recipes or those that I can fairly easily throw together in my crock pot.
I had a beef roast sitting in my freezer waiting to be cooked, but I knew it would probably be Fall before I could get around to making roast beef in the oven. I had an idea of making slow cooker roast beef with French onion soup that I had made and frozen a while ago. I was excited about this NEW idea, until my husband told me his grandmother used to make it all the time. Oh, well, it's all been done before! I had made it already by the time he told me his grandmother used to make it, so I'm going to share it with you in case, like me, you never heard of it before.
How do I make French Onion Roast Beef?
Place a three pound beef rump roast (or similar cut of beef) in your slow cooker.
Add two cups of sliced carrots.
Pour in one can of French onion soup and one can water, or 20 ounces of homemade. Sprinkle with pepper and also salt if using homemade French onion soup.
Cover and cook on HIGH for 5 to 6 hours or on LOW for about 10 hours, depending on how well done you want your roast. If a more rare roast is desired, check the beef at about 3 hours on HIGH or 7 hours on LOW.
About 10 minutes before serving remove the roast to a cutting board, and the carrots and onions to a bowl, leaving the broth in the slow cooker. Wisk the cornstarch or flour with a little bit of water ( enough to make a thin paste) and pour into the broth, stir well for about 1 minute, and leave to thicken while you slice the beef. You can also remove the broth to a small pot and prepare the gravy on the stove, by bringing the broth to a boil, adding the cornstarch mixture and wisking for 1 minute. The stove top method will result in a slightly thicker gravy.
Top sliced beef with the gravy, and serve with whatever sides you like.
Looking for more slow cooker dinner recipes? Try these:
Slow Cooker Turkey Breast with Gravy
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Slow Cooker French Onion Roast Beef
Ingredients
- 3 pounds beef rump roast
- 2 cups sliced carrots
- 10 ½ ounces canned French Onion soup (1 can, or 20 ounces homemade, omit water)
- 1 cup water
- black pepper , to taste
- 3 tablespoons cornstarch (or flour)
Instructions
- Place the rump roast in the bottom of the slow cooker pot. Add two cups of sliced carrots.
- Pour in one can of French onion soup and one can water, or 20 ounces of homemade. Sprinkle with pepper and also salt if using homemade French onion soup.
- Cover and cook on HIGH for 5 to 6 hours or on LOW for about 10 hours, depending on how well done you want your roast. If a more rare roast is desired, check the beef at about 3 hours on HIGH or 7 hours on LOW.
- About 10 minutes before serving, remove the roast to a cutting board, and the carrots and onions to a bowl, leaving the broth in the slow cooker. Wisk the cornstarch or flour with a little bit of water ( enough to make a thin paste) and pour into the broth, stir well for about 1 minute, and leave to thicken while you slice the beef. You can also remove the broth to a small pot and prepare the gravy on the stove, by bringing the broth to a boil, adding the cornstarch mixture and wisking for 1 minute. The stove top method will result in a slightly thicker gravy.
- Top sliced beef with the gravy, and serve with whatever sides you like.
Rick says
This one sounds good BUT:
"About 10 minutes before serving, remove the roast to a cutting board, and the carrots and onions to a bowl..."
Onions?
I don't see no stinkin' onions mentioned in the ingredients! Surely you don't mean removing any itty bitty bits remaining that came from the onion soup? I M Confoosed.
Bernadette says
Yes, I meant the onions from the soup. I had used leftover homemade French onion soup here, which does have bigger onion slices than the canned soup, but I have also used canned before and there are "some" pieces of onion left.
MAMA OF 4 says
We have made this in my family for YEARS! Slightly different though, in that; we use the dry packet of "Lipton onion soup mix" (any brand will work.) I use two packets. The juices then make amazing gravy or dumplings! SOOOO DELICIOUS! Loved it as a child and, now, my children do! Great recommendation! =)
Becca from ItsYummi.com says
This is one of my very favorite slow cooker recipes. Between this and boneless country spare ribs... I can never decide which I like more!