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When I think of the ultimate comfort food dinner, pot roast always comes to mind. This easy slow cooker pot roast with potatoes and carrots is one of those recipes that proves you don’t have to spend hours in the kitchen to enjoy a hearty, homemade meal.
By investing just a few minutes in the morning, you can come home to a complete dinner waiting for you. The beef turns tender, the vegetables soak up rich flavor, and the creamy onion gravy ties it all together. It’s truly maximum reward for minimal effort — the kind of recipe I rely on during busy weeks.
This lightened-up version keeps all the cozy flavor while being a bit more Weight Watchers friendly. With lean beef, lighter cream of mushroom soup, and simple pantry ingredients, it’s a slimmed-down twist on a classic pot roast recipe.

Table of Contents
- Why You’ll Love This Slow Cooker Pot Roast
- Ingredients for Slow Cooker Pot Roast
- Substitutions & Variations
- Calories and WW Points
- Easy Slow Cooker Pot Roast Recipe Instructions
- Recipe Notes
- Serving Suggestions
- Storing Leftovers
- Creative Ways to Use Leftovers
- Easy Peasy Slow Cooker Pot Roast Recipe
- More WW-Friendly Slow Cooker Beef Recipes
- Make Healthy Comfort Food Easier
Why You’ll Love This Slow Cooker Pot Roast
- One-pot dinner – Meat, potatoes, and carrots all cook together for a complete meal.
- Hands-off cooking – Just 10 minutes of prep and the slow cooker does the rest.
- Classic comfort food – Tender beef and savory gravy without the fuss.
- WW friendly – Made lighter with lean beef and a healthier cream of mushroom soup.
- Family favorite – A cozy dinner that even picky eaters will love.
Ingredients for Slow Cooker Pot Roast
- 2 ½ pound bottom round rump roast – A lean cut that keeps this pot roast WW friendly. You could also use chuck roast if that’s what you have, though it will be a little higher in fat.
- 2–3 teaspoons Montreal Steak Seasoning (optional) – Adds great flavor, but salt, pepper, and garlic powder work too.
- 1 can (10.75 ounces) cream of mushroom soup – I used Campbell’s Healthy Request for a lighter option. Cream of celery or cream of chicken soup would also work.
- 1 envelope dry onion soup mix – For rich, savory flavor. You can make your own with dehydrated onions, bouillon, and onion powder if you want to control sodium.
- 8 small potatoes, cut in half – Red or Yukon gold potatoes work best since they hold their shape. You could also use baby potatoes or even sweet potatoes.
- 8 medium carrots, cut into fourths – Feel free to swap in parsnips for a fun twist or add extra carrots if your family loves them.
Substitutions & Variations
- Different cuts of beef – A bottom round roast keeps this recipe lean, but chuck roast, shoulder roast, or brisket can also be used. Keep in mind fattier cuts will be more tender but also higher in calories and WW points.
- Soup options – Instead of cream of mushroom, try cream of celery, cream of chicken, or even golden mushroom soup. Each brings a slightly different flavor profile.
- Homemade onion soup mix – If you’d like to skip the packet, mix ¼ cup dehydrated onions, 2 tablespoons beef bouillon (low sodium), and ½ teaspoon onion powder for a DIY version.
- Potato swaps – Baby red or Yukon gold potatoes hold their shape best, but sweet potatoes can be used for a different twist.
- Extra veggies – Along with carrots, you can add parsnips, celery, or mushrooms for more flavor and bulk without adding many WW points.
Calories and WW Points
According to my calculations, each serving of this slow cooker pot roast has:
- Calories: 350
- WW Points: To see your WW Points for this recipe and/or track it in the WW app. (You must be logged into WW on a smartphone or tablet.)
- PointsPlus (old plan): 10
Easy Slow Cooker Pot Roast Recipe Instructions
Step 1: Prepare the vegetables
Place the carrots and potatoes in the bottom of a 4-quart slow cooker (affiliate link). This gives the vegetables plenty of time to soften and soak up flavor as they cook.
Step 2: Season the beef
Rub the roast with Montreal Steak Seasoning (if using) or simply sprinkle with salt and pepper. Place the roast on top of the vegetables in the slow cooker.
Step 3: Mix the sauce
In a small bowl (affiliate link), stir together the cream of mushroom soup and dry onion soup mix. Spread this mixture evenly over the roast.
Step 4: Slow cook until tender
Cover and cook on LOW for 8 to 10 hours, or until the beef is fork-tender and the vegetables are fully cooked.
Step 5: Serve and enjoy
Slice or shred the roast, then serve with the potatoes, carrots, and plenty of savory gravy spooned over the top.
Recipe Notes
- Meat choice matters: I used a bottom round rump roast because it’s leaner and keeps the recipe more WW friendly. If you prefer a more traditional, fall-apart texture, a chuck roast will give you that — though it will be higher in fat and calories.
- Soup and seasoning: Using Campbell’s Healthy Request cream of mushroom soup helps cut down on fat and sodium. You can also lighten things up by making your own onion soup mix to better control the salt.
- Vegetables: Potatoes and carrots are the classic combo, but you can mix it up by adding parsnips, mushrooms, or celery.
- Leftovers taste better: Like most pot roast recipes, this one is even more flavorful the next day. Store leftovers in the fridge and reheat gently for best results.
- Freezer-friendly: The cooked beef and gravy freeze well. For best texture, freeze without the potatoes and carrots, then add fresh vegetables when you reheat.

Serving Suggestions
- Simple green side – A fresh green salad, like this simple arugula salad with sunflower seeds or steamed green beans adds balance and lightness to this hearty meal.
- Extra vegetables – Skillet roasted brussels sprouts with bacon, air-fryer broccoli parmesan, or parmesan roasted asparagus pair nicely without adding many extra points.
- Lighter bread alternative – Instead of bread or rolls (which can feel heavy alongside potatoes), try serving with roasted cauliflower or a side of sautéed spinach for extra flavor and nutrients.
- Make it stretch – Shred leftover beef and use it for sandwiches, wraps, or even tacos the next day.
Storing Leftovers
- Refrigerator: Store leftover pot roast, potatoes, and carrots in an airtight container in the fridge for up to 4 days.
- Freezer: For best results, freeze just the beef and gravy (without potatoes and carrots) in a freezer-safe container for up to 3 months. Add fresh vegetables when reheating.
- Reheating: Warm gently on the stovetop or in the microwave (affiliate link), adding a splash of broth or water if needed to loosen the gravy.

Creative Ways to Use Leftovers
Leftover pot roast is one of my favorite kitchen shortcuts. Here are a few simple and WW-friendly ways to turn it into new meals:
- Shredded Beef Sandwiches – Pile warmed beef on light buns or sandwich thins and add pickles or slaw for crunch.
- Hearty Beef & Vegetable Soup – Dice the beef and simmer it with broth, leftover gravy, and any extra veggies for a comforting soup.
- Pot Roast Tacos or Quesadillas – Shred the beef and tuck it into corn tortillas with salsa, or make a quick quesadilla with reduced-fat cheese.
- Beef & Rice Bowls – Serve reheated beef and gravy over brown rice or cauliflower rice, then top with extra steamed vegetables.
- Shortcut Shepherd’s Pie – Layer the beef and gravy with extra vegetables, then top with mashed potatoes (or mashed cauliflower for a lighter version).
If you’ve made this Crock Pot Roast, please give the recipe a star rating below and leave a comment letting me know how you liked it. And stay in touch on Pinterest, Facebook, Instagram and Twitter for the latest updates.

Easy Peasy Slow Cooker Pot Roast Recipe
Ingredients
- 2-1/2 pound bottom round rump roast
- 2-3 teaspoons Montreal Steak Seasoning (optional)
- 1 can (10.75 ounces) cream of mushroom soup (I used Campbell’s Healthy Request)
- 1 envelope dry onion soup mix**
- 8 small potatoes, cut in half
- 8 medium carrots, each cut into fourths
Instructions
- Ideal slow cooker size: 4-Quart.
- Place the carrots and potatoes in the slow cooker.
- Season the roast with the Montreal Steak Seasoning, if using, and place in the slow cooker on top of the carrots and potatoes.
- Stir together the mushroom soup and dry onion soup mix and spread over the meat.
- Cover and cook on LOW 8 to 10 hours, or until tender.
Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Source: Betty Crockers Cookbook (1978) (affiliate link)
More WW-Friendly Slow Cooker Beef Recipes
If you enjoyed this comforting slow cooker pot roast, you might also like some of my other lighter beef recipes made in the crock pot:
- My Slow Cooker Italian Style Pot Roast is simmered with tomatoes, herbs, and vegetables for a flavorful Mediterranean twist.
- This Slow Cooker Balsamic Beef has a tangy-sweet glaze that pairs beautifully with potatoes or polenta.
- For something hearty yet surprisingly light, try my Easy Slow Cooker Beef and Mushrooms — a simple dish that tastes like comfort food without the guilt.
- And my family’s favorite, 3-Packet Slow Cooker Roast Beef, proves that sometimes the easiest recipes are the most delicious.
Make Healthy Comfort Food Easier
If you love cozy recipes like this slow cooker pot roast, you’ll find even more lightened-up comfort food favorites in my Ultimate eCookbook Bundle.
It’s packed with WW-friendly recipes designed to make healthy eating simple and satisfying — from slow cooker classics to pasta bakes, soups, and casseroles.





what are the portions per serving?
Hi Michael,
Sorry, but I don’t have anything more specific than 1/8th of the recipe on this one. ~Martha
Hello,
I did not notice any liquid added. Is that correct. I do not cook often but have used broth in the past.
Thanks
Hi Craig, yes the recipe is correct as written. The meat, veg, and soup will create liquid as it cooks. ~Martha
What can you offer as a substitute for onion soup mix and bouillon cubes, both are very high in sodium content, having high B/P and having to limit sodium intake , those two choices are not very friendly…
Hi Nellie, I would use this recipe for DIY Dry Onion Soup Mix (All Recipes)