Slow Cooker French Onion Pot Roast

Tender, fall-apart roast is infused with the rich, savory flavors of French onion soup — this slow cooker french onion pot roast is a game-changer. It’s a true set-it-and-forget-it easy dinner recipe that always hits the spot!

This French onion pot roast is proof that delicious dinners don’t have to be complicated. Toss everything into your crockpot in the morning, and by dinnertime, you’ll have a meal bursting with flavor! With its melt-in-your-mouth meat and savory onion gravy, you’ll be serving seconds before you know it. When it comes to easy crockpot recipes, this is one of the very best!

Why Do We Love Crockpot French Onion Pot Roast?

Enjoy more of our favorite pot roast recipes like our quick instant pot pot roast and this classic crockpot pot roast!

Key Ingredients

All of the classic pot roast and veggie ingredients you know and love, but with a french onion twist! Check the recipe card at the bottom of the post for the full ingredient list.

• Roast: We typically use a sirloin tip roast for this easy recipe, but any boneless roast will do. You don’t need to buy an expensive cut of meat. Slow roasting all day will make the roast nice and tender.
• Yellow Onion: While you can use a white onion in a pinch, a yellow onion has a natural sweetness that perfectly balances the savory flavors.
• Potatoes: Red potatoes hold their shape when cooked low and slow, but you can use any diced or baby potatoes you have on hand.
• Carrots: You can use frozen sliced carrots instead of fresh to save a little time.
• French Onion Soup Cans: Any brand works well, so just use your favorite.
• Lipton Onion Soup Mix: This adds SO much flavor to the entire dish. Try not to swap it with anything else. You add the dry mix to the gravy, don’t mix it according to the package!
• Cornstarch: This is used as a thickening agent for the sauce. Use more or less to control how thick you want it to be.

How to Make French Onion Pot Roast

Here’s a quick tutorial showing you how to make this french onion pot roast in the slow cooker. Please scroll down to the recipe card for full instructions.

• Prepare for cooking: Season the roast and place it in the crockpot. Then, add the veggies and tuck them all around/on top of the meat.
• Make the french onion mixture: Whisk together the french onion soup, Lipton soup mix, cornstarch, and Worcestershire sauce. Pour it into the crockpot.

• Cook: Cover and cook on low for 7 to 8 hours or on high for 5 to 7 hours. Cooking your meat on low, for the longer cook time, will guarantee the best fork tender results!
• Thicken: Before serving, remove the lid from the slow cooker and turn the setting to warm. Stir and give it about 10 minutes for the gravy to thicken.

Cook’s Tips & Variations

• Let the Gravy Thicken: When you first remove the lid after slow cooking all day, the gravy will not be thick. Stir and let it rest, with the lid removed, and turn off the heat. The gravy will thicken after about 10 minutes.
• Sear The Roast: If you want to increase the beef flavor, you can sear the roast before adding it to the crockpot. We have tested it both ways and we honestly can’t tell the difference!
• More Veggies: Mushrooms and peas are great additions! Just add them towards the end of cook time so they don’t get too soft.
• Caramelized Onions: Caramelize the onions in a skillet first for an even richer flavor.
• Make it Creamy: Stir in a dollop of sour cream or heavy cream just before serving for a creamy gravy.

Storing, Reheating, and Freezing

• Storing: Store leftovers in an airtight container for up to 4 days.
• Reheating: Reheat in the microwave or on the stovetop over low heat. Add a little broth if needed to thin the gravy.
• Freezing: Portion the cooled roast, veggies, and gravy into freezer-safe containers. Freeze for up to 3 months. Thaw overnight in the fridge before reheating.

More French Onion Recipes To Try