Pot roast with onions on the stove is wonderfully flavorful when made with a sirloin tip roast. Simmered in a Dutch oven with onion soup mix and plenty of fresh sliced onions, this simple technique turns a modest cut of beef into a tender, savory meal.
This is one of our most requested Dutch oven recipes at home—even my teenagers ask for it. You can use many different cuts of beef, but for meat that easily shreds for sliders choose chuck roast. Sirloin tip roast is a good lean option if you prefer to slice the meat.
The bold flavor in this dish comes from French’s-style onion soup mix and the deeply caramelized onions the meat cooks in. All you need beyond those is a bit of oil for searing and beef broth (diluted with water if you want to reduce sodium) to keep the roast moist and tender.
The taste leans toward a French onion profile: sweet, savory onions and a rich gravy bathing the beef. Cooking on the stovetop for several hours gives the roast time to absorb those flavors. Leaner cuts will cook faster and are best sliced, while fattier cuts like arm roast or chuck benefit from longer cooking until they shred easily with two forks.
Ingredient Notes
In this recipe we used a 3-pound pot roast. Chuck roast is ideal if you want shreddable meat; sirloin tip roast works well if you plan to slice. The key ingredients are:
- Olive oil (or another cooking oil) to sear the beef
- 2 packets onion soup mix for that classic French onion flavor
- 2 large onions, sliced thick (yellow or white)
- Garlic, minced (optional but recommended)
- Beef broth combined with water to control sodium and build the braising liquid
Substitutions and Variations
You can tweak this pot roast in several ways. Add pepperoncinis for a Mississippi pot roast twist or swap olive oil for avocado oil when browning the meat. Use all beef broth if you prefer a saltier finish, or mix water to taste.
Onions with Frozen Roast
If your roast is frozen, cook the onions down first, then transfer everything to a slow cooker and follow low‑and‑slow steps for best results. Cooking time will be longer when the roast starts from frozen; the slow cooker helps the meat become as tender as possible.
Cooking Tips
Use a deep cast-iron pan or Dutch oven to handle the liquid. Searing the roast over medium-high heat before braising is optional but highly recommended—it develops flavor and helps the meat retain moisture. After searing, remove the roast and cook the onions in the same pot until they reach a dark brown color. Deglaze with a small amount of broth, return the roast, pour in the remaining liquid, cover, and simmer gently until tender.
Cook time depends on the cut and size. Lean cuts become tough if overcooked, so watch them closely. Fattier, well-marbled cuts tolerate longer cooking and will become exceptionally tender and shreddable when braised slowly.
Pot Roast with Onions Recipe
Equipment
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1 Dutch oven
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Tongs
Ingredients
- 3 pounds pot roast, (chuck roast for shredding; sirloin tip used here for slicing)
- 3 tbsp olive oil
- 2 packets onion soup mix
- 2 large onions, sliced
- 3 tbsp garlic, minced
- 20 oz beef broth
- 1 cup water, (optional — can use all beef broth but it will be saltier)
Instructions
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Heat the Dutch oven over medium-high and add oil. Pat the roast dry. Pour the onion soup mix onto a plate and press the roast into it to coat the exterior.
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When the oil is hot, brown the roast on all sides, 2–3 minutes per side. Remove and set aside. Reduce heat to medium. Slice onions into 1/2-inch pieces.
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Pour 1/2 cup of broth into the pot to deglaze, scraping up browned bits. Add all the onions and cook until they soften and begin to darken, about 5 minutes.
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Add the garlic and stir briefly. Pour in the remaining broth and return the roast to the pot, setting it on top of the onions.
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Cover the pot and reduce the heat to low-medium. Slow cook for 1½ hours, then flip the roast and spoon onions over the top. Cover and cook another 30 minutes for leaner cuts. Slice and serve topped with caramelized onions.
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For fattier cuts intended for shredding, check with two forks. If the meat resists, add another 1/2 cup liquid and continue cooking in 30-minute increments until it pulls apart easily.
Notes
Frozen Roast with Onions
A frozen roast will take much longer on the stove—expect 4–5 hours. After two hours, monitor the liquid level and add 1/2 cup at a time as needed. Remove when the internal temperature reaches 145°F for serving, and let the roast rest 10 minutes before slicing.
Nutrition
Nutrition information is an approximation.
Additional Info
I usually serve pot roast with a batch of creamy mashed potatoes, but rice or egg noodles are great too. For a lower-carb option, roasted vegetables pair nicely. No matter the side, the rich onion gravy makes this a family-pleasing meal.
Slow Cooker Method
For a hands-off version, cook the onions down as directed, then combine everything in a slow cooker and cook on low until the roast is tender. Finish by preparing mashed potatoes or your preferred sides.
Pressure Cooker Method
If you need a faster option, use an electric pressure cooker. While low-and-slow yields the best texture, the Instant Pot can speed things up when time is limited. Slice or shred and serve over egg noodles with a drizzle of onion gravy.
What to do with leftover pot roast
Let leftovers cool to room temperature, then store in an airtight bag or container with as much sauce as possible to keep the meat moist. Reheat gently with the gravy, and add a splash of broth if the sauce has reduced. Leftover pot roast is excellent on Hawaiian rolls as sliders, diced into casseroles, tossed with noodles, or reheated with roasted or air-fried onions to freshen the dish.
