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Last Sunday, still feeling a little jet lagged, I was craving something easy, cozy, and comforting for dinner. My first thought was, slow cooker to the rescue. A quick walk to the market sealed the deal—beef roasts were on sale, so I picked up one along with a big onion and some red potatoes.
There’s just something timeless about an easy slow cooker pot roast with potatoes and onions. It’s the kind of meal that fills the house with the most wonderful aroma and makes everyone feel welcome at the table.
Over my morning coffee, I flipped through a few of my favorite slow cooker cookbooks and landed on this recipe from Fix-It and Forget-It Lightly Revised and Updated: 600 Healthy, Low-Fat Recipes for Your Slow Cooker (affiliate link). I loved how simple it was, and I already had everything I needed.
If you are looking for more WW-friendly comfort food, you might also enjoy my easy peasy slow cooker pot roast or this family favorite Hearty CrockPot Beef Stew.

Why You’ll Love This Recipe
- Effortless prep – Just a few minutes of simple prep, then the slow cooker does the work.
- Perfect for company – A classic, comforting main dish that’s impressive yet easy enough for everyday.
- Family-friendly – Tender beef, potatoes, and onions appeal to just about everyone.
- Budget-conscious – Uses an affordable cut of beef and pantry staples.
- WW-friendly – With leaner cuts and smart portions, this pot roast can fit right into your Weight Watchers plan.
- Great leftovers – Even better the next day, and leftovers can be turned into sandwiches, wraps, or grain bowls.
How Many Calories and WW Points in this Slow Cooker Roast?
According to my calculations each serving has 320 calories.
To see your WW Points for this recipe, track it in the WW App!
(You must be logged into WW on a smartphone or tablet.)
8 PointsPlus (Old plan)
Ingredients
- Boneless pot roast – I like to use a rump roast, but chuck roast or shoulder roast also work well. Choose a cut with a little marbling for the most tender, flavorful results.
- All-purpose flour – Helps brown the meat lightly and gives the sauce a touch of body as it cooks.
- Prepared mustard – Adds a subtle tang and depth. Yellow mustard works, but Dijon will give a slightly sharper flavor.
- Chili sauce – A mild tomato-based condiment (like Heinz Chili Sauce) that brings a gentle sweetness and savory kick without being spicy.
- Worcestershire sauce – Provides that classic umami boost and a bit of savoriness that pairs beautifully with beef.
- Red wine vinegar – Brightens the sauce and balances the richness of the meat.
- Sugar – Just a pinch rounds out the tangy and savory flavors in the sauce.
- Potatoes – Sliced potatoes soak up all the delicious juices as they cook, turning tender and flavorful.
- Onions – Cook down into the sauce and add natural sweetness to the roast.
- Salt and freshly ground black pepper – Season simply to taste. Like Ina Garten, I almost always use Diamond Crystal Kosher salt when cooking, because it’s lighter and easier to control than regular table salt.
Substitutions and Tips
- Vegetables – Swap in carrots, parsnips, or turnips for part of the potatoes to add variety and extra nutrition.
- Potatoes – If you’d prefer, use baby potatoes and leave them whole—they’ll hold their shape nicely.
- Vinegar – Balsamic vinegar makes a slightly sweeter, deeper-flavored substitute for red wine vinegar.
- Mustard – Dijon or spicy brown mustard can replace yellow for a bolder flavor.
- Chili sauce – If you don’t have Heinz-style chili sauce, use ketchup with a pinch of chili powder or hot sauce for a similar effect.
- Make-ahead – This roast tastes even better the next day. Refrigerate and skim any fat from the top before reheating.
Recipe Notes
This recipe couldn’t be simpler. You just place the meat in the slow cooker, then make a quick paste with the flour, mustard, chili sauce, Worcestershire, vinegar, and sugar, and rub it all over the roast. Layer the sliced potatoes and onions on top, cover, and let the slow cooker work its magic.
At first, I was a little hesitant because the recipe doesn’t call for adding extra liquid or searing the beef beforehand. But I decided to trust the process—and I am glad I did. After about six hours, I had a moist, fork-tender roast with potatoes and onions nestled in a thin but flavorful gravy (the flour in the paste helps create just the right texture).
Served with a simple mixed green salad, it turned into exactly the kind of old-fashioned, home-cooked meal I was craving after more than two weeks of restaurant food.
Another bonus? The leftovers. Pot roast always tastes even better the next day. I like to reheat slices with the gravy, or shred the beef and use it for sandwiches, wraps, or even tucked into a baked potato for an easy lunch.

This roast is just one of the easy Healthy Dinner Ideas for Company That Won’t Sabotage Your Goals. For more tips and inspiration, listen in on our Simple Shifts podcast episode about Healthy Dinner Ideas for Company
Serving Suggestions
- Simple Green Salad – A crisp salad with a light vinaigrette balances the richness of the roast.
- Steamed or Roasted Vegetables – Carrots, green beans, or broccoli make colorful and healthy sides. This air-fryer roasted broccoli would be perfect.
- Whole Grain Rolls or Bread – Perfect for soaking up the flavorful gravy.
- Lighter Potato Swap – If you’d like to cut back on starchy sides, serve the roast with mashed cauliflower or roasted carrots.
- Next-Day Leftovers – Shred leftover beef and serve it in tacos, on top of a baked potato, or tucked into a wrap for an easy lunch.
If you’ve made this Crock Pot Beef 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 Slow Cooker Beef Pot Roast Recipe
Ingredients
- 3 pound boneless pot roast (I used rump roast)
- 2 tablespoons all-purpose flour
- 1 tablespoon prepared mustard
- 1 tablespoon chili sauce (such as Heinz)
- 1 tablespoon Worcestershire sauce
- 1 teaspoon red wine vinegar
- 1 teaspoon sugar
- 4 potatoes, sliced
- 2 onions, sliced
- Salt and fresh ground black pepper to taste
Instructions
- Ideal slow cooker size: 4- to 5-Quart.
- Place the pot roast in the slow cooker.
- In a small bowl (affiliate link), combine the flour, mustard, chili sauce, Worcestershire sauce, vinegar, and sugar to make a paste. Spread all over the roast.
- Top with the potatoes and onions.
- Season to taste with salt and pepper.
- Cover and cook on LOW 6 to 8 hours, or until the roast is cooked.
Notes
(Must be logged into WW on a smartphone or tablet.) 9 SmartPoints (Green plan) 9 SmartPoints (Blue plan) 6 SmartPoints (Purple plan) 8 PointsPlus (Old plan)
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Source: Fix-It and Forget-It Lightly Revised and Updated: 600 Healthy, Low-Fat Recipes for Your Slow Cooker (affiliate link) by Phyllis Good
Frequently Asked Questions
What cut of beef is best for a WW-friendly slow cooker pot roast?
I usually choose a rump roast, but chuck or shoulder roast will also work. For fewer WW Points, opt for leaner cuts like rump (bottom round), eye of round, top round, or sirloin tip roast. These cuts are naturally lower in fat but still turn out tender and flavorful when cooked low and slow. No matter which cut you use, trimming away any visible fat before cooking is an easy way to make the roast even lighter.
Do I need to sear the beef before slow cooking?
Not for this recipe. The paste of flour, mustard, and seasonings creates a flavorful coating that eliminates the need to sear. If you prefer deeper flavor, you can brown the roast first — just remember a small amount of added oil will increase the points.
Can I make this ahead?
Yes. Pot roast reheats beautifully and often tastes even better the next day. Store leftovers in the refrigerator for up to 3 days and skim any fat from the top before reheating to keep it lighter.
Can I freeze pot roast?
Absolutely. Slice or shred the beef, then freeze it with some of the cooking juices in an airtight container or freezer bag for up to 3 months. Thaw overnight in the refrigerator before reheating.
Is slow cooker pot roast WW-friendly?
Yes — especially when you use lean beef and balance your plate with zero-point vegetables like green beans, broccoli, or a crisp salad. Track your portion of beef and potatoes, and you’ll find this cozy dinner can easily fit into your daily points.
How can I lower the points in this recipe?
Swap some of the potatoes for carrots or cauliflower, use a leaner cut of beef, and keep portions moderate. Leftovers are also great served over veggies, tucked into a lettuce wrap, or spooned over a baked potato for a lighter next-day meal.
There’s a reason pot roast has stood the test of time — it’s simple, hearty, and always welcome at the table. With a few smart tweaks, it can also be a WW-friendly comfort food that fits right into your healthy eating plan. Whether you serve it fresh from the slow cooker or reinvent the leftovers the next day, this Company’s Coming Slow Cooker Roast is the kind of meal that brings people together.
More Weight Watchers Friendly Pot Roasts
If you enjoy this recipe, you might also like these other WW-friendly pot roast favorites:
- Slow Cooker Italian Style Pot Roast
A lighter twist with tomatoes, Italian herbs, and plenty of vegetables for a WW-friendly take on classic pot roast. - Old-Fashioned New England Pot Roast
Just like Sunday dinner at Grandma’s—slow simmered with carrots, onions, and potatoes for true comfort food. - Yankee Pot Roast Dinner
A hearty one-pot meal with tender beef, root vegetables, and a savory gravy that makes it a family favorite. - Slow Cooker Balsamic Beef
Sweet and tangy balsamic vinegar gives this simple roast incredible depth of flavor with very little effort. - Easy Slow Cooker Beef and Mushrooms
A cozy, fuss-free recipe where mushrooms cook down into a rich, savory sauce that’s perfect over potatoes or noodles.




