Beef Pot Roast Done in a Oven Bag

Mom's Best Pot Roast is an easy dinner recipe made with beef chuck roast, carrots and potatoes and baked in the oven until it's tender, juicy and delicious!

oven baked beef chuck roast with baby carrots, potatoes, celery and onions on a white platter

This is my mom's super easy recipe for pot roast in an oven bag. We had this roast beef dinner all the time when I was growing up, and it was always tender, flavorful and perfectly cooked!

Yes, I'm totally biased, but I just think this pot roast with potatoes and carrots is the best pot roast in a bag recipe ever. It's also a one pan meal with easy clean-up, so it's perfect for Sunday supper or busy weeknights!

So, this oven baked chuck roast recipe does use onion soup mix. And if you know me, you know I usually stay away from packaged mixes. But, I really wanted to make my mom's recipe for my kids and share a recipe that some of you may remember, as well.

I ended up using just half of the soup mix, and it was still good! You can definitely use the whole packet if you want.

Best Meat for Pot Roast

My mom and grandma always used beef chuck roast, and that's the cut of meat I've always used, as well. You can shred it with a fork, and it just melts in your mouth.

You can also try using rump roast, but it really doesn't shred like chuck. If you want to slice your roast, go with the rump roast.

How To Cook Chuck Roast in an Oven Bag

You should be able to find oven bags in just about any grocery store -- usually with the food storage bags and disposable bakeware. You'll want to read the manufacturer's instructions before using.

So first, add some flour to the bag, and shake so that it gets evenly distributed. Then, add your chuck roast and veggies around the roast and on top.

chuck roast in an oven bag with baby carrots, celery, potatoes and onions

I like to add whole garlic cloves to the top of the roast and mash them into the roast after it's cooked. Oh, talk about flavor!

Add the soup mix, pour in a little beef broth or water, and close the bag with one of the ties that come with the oven bags. Next, use a sharp knife to poke slits in the bag for the steam to escape.

How Long to Cook Chuck Roast in Oven at 350

I cooked the chuck roast in the oven at 350 degrees, and it was done in about 1 hour and 30 minutes. You can test the temperature by inserting a meat thermometer in one of the slits you made for venting.

What I like to do is turn the temperature down to 325 and cook the roast for another hour to an hour and a half so that it gets completely fork tender. You can also remove the contents from the bag into the baking dish if you want to brown the food a little more at the end.

beef pot roast and vegetables baked in an oven bag

Don't forget to mash the roasted garlic into the meat for even more flavor. And, be sure to pour those awesome juices over everything before serving!

oven baked beef chuck roast on a platter with carrots, potatoes and celery

More Easy Pot Roast Recipes

Instant Pot Pot Roast
Crock-Pot Mississippi Chuck Roast
Instant Pot Mississippi Roast

closeup of beef chuck pot roast with potatoes and carrots

Mom's Best Pot Roast Recipe

oven baked chuck roast with baby carrots, potatoes, celery and onions on a white platter

Mom's Best Pot Roast

Mom's Best Pot Roast is an easy dinner recipe made with beef chuck roast, carrots and potatoes and baked in the oven until it's tender, juicy and delicious! Simple homestyle comfort food!

Cook Mode Prevent your screen from going dark

Prep Time 7 mins

Cook Time 2 hrs

Total Time 3 hrs 7 mins

Course Main

Cuisine American

Servings 8

Calories 389 kcal

1 tablespoon white flour
3 pound chuck roast
4 Yukon gold potatoes quartered
1 pound baby carrots 1 pound bag
2 celery stalks cut into thirds with leaves
1 onion peeled and cut into large chunks
3 garlic cloves whole, peeled
1 onion soup mix ½ packet or whole, if desired
1 cup beef broth

Preheat oven to 350 degrees
Place the flour in the oven bag, and shake
Place chuck roast in bag, place the bag into a 13x9-inch baking pan, and add the potatoes, carrots, celery and onions around the roast
Place the garlic cloves on the roast, and sprinkle with dry soup mix
Pour the beef broth in the bag, and use the ties to close up the bag
Using a sharp knife, cut 6 slits in the top of the bag to allow steam to escape
Place roast in oven, and bake for 1 ½ to 2 hours or until roast and vegetables are tender, and internal temperature of roast is over 160 degrees according to a meat thermometer
Optional, remove roast and vegetables from bag, shred or cut roast into large pieces, place into baking dish, with cooking liquids, cover, and bake at 325, adding more broth if needed, until ready to eat

To make without oven bag, add all ingredients to a baking dish, cover, and bake, basting occasionally.

Optional Cooking Time -- Can bake chuck roast at 325 for 2 ½ to 3 hours or until over 160 degrees and tender

Calories: 389 kcal Carbohydrates: 18 g Protein: 36 g Fat: 20 g Saturated Fat: 9 g Cholesterol: 117 mg Sodium: 314 mg Potassium: 1091 mg Fiber: 4 g Sugar: 3 g Vitamin A: 7841 IU Vitamin C: 13 mg Calcium: 80 mg Iron: 7 mg