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No Peeking Allowed Beef Casserole

This easy slow cooker recipe makes dinner a snap!

Updated May 05, 2021
No Peeking Allowed Beef Casserole
No Peeking Allowed Beef Casserole
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Ready for a casserole recipe that will blow your mind with how easy and delicious it is? This No Peeking Allowed Beef Casserole is the perfect dump and go recipe that you can simply combine, put in your slow cooker, and leave. Come back to your beef casserole after a few hours and BAM it's ready for serving, like magic! This casserole recipe is the perfect slow cooker recipe that you can throw on at the beginning of a busy day and have ready by the time you come home for dinner!

Cooking MethodCasserole, Slow Cooker



Total TimeHalf Day


  • 2 pounds stew meat cut into 1-inch cubes
  • 1 envelope onion soup mix
  • 1/2 cup beef broth
  • 1 can cream of mushroom soup
  • 1 package mushrooms


  1. Combine all ingredients. Stir together well. Add to slow cooker.

  2. Cover and cook on LOW for 8 to 12 hours, or cook on HIGH for 5 to 6 hours.

  3. Serve over noodles or rice if desired.

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Yummm - this is a great recipe to set up and leave alone until it's ready. I'm always excited when I remember I have this cooking in the kitchen!

This is the first thing I made in my crock pot (harvest gold model) in the mid 70's. Still make it today. When we travel I always ask if there is a crockpot available and if so make this while we are out sight seeing. Home to a wonderful dinner.

Omg yum! Everything about this recipe makes me want to run out and buy some beef...and since I've always got tons of mushrooms calling out my name to be eaten, why not? I think slow cooker meals are the best for saving time, developing rich flavors, and producing amazing aromas that linger throughout your home all day. This would be so great with some egg noodles or over mashed potatoes.

Even though I work from home, I have crazy hours. I am considered a second shift employee and most nights I clock out after 12:00. So needless to say, I am not up and about until late in the mornings and sometimes I just don't want to cook. I can whip this recipe up after work and its ready before I get up.

If I could come home to a meal like this, I would be happy about it and that is for sure. Preparing beef slowly really makes it tender so even if you had an inexpensive cut of beef this would still turn out great. Yummy!

Slow cooker meals are our favorite go to for weeknight dinners and in the photo this casserole looks to rich tasting and delicious that I could almost taste it. Now that we have actually made I am so happy to be able to say that it tastes every bit as good as it looks.

I can just smell and taste this already

I love recipes for my slow cooker. Don't you just love the smells coming out of it whilst it's cooking? I love coming home and smelling whatever is on the go. It is getting cold here now and this is a perfect recipe for a cold winter's night. I often cook with onion soup and love that flavor. I'm also a big fan of mushrooms. I think I'm really going to like this dish.

Tasty, hearty and warming. All the things one looks for in a casserole! I have made this twice now first time using chicken (because we had no beef) and then again yesterday using the recommended beef. It takes mere minutes to mix all the ingredients together, then you put them in the slow cooker and get on with your day while it all cooks itself into a delicious meal. How easy is that. Do make it it really is good!

This casserole was out of this world! When I made it, I added just a little bit of rosemary.

I love recipes like this that are super simple, yet produce a really tasty meal. This is definitely going into my personal slow cooker recipe file. All this needs is a side vegetable or two and it's a great fast meal to prepare. I love the idea of adding a half-cup of sherry to the recipe since I think that would be the perfect addition to this easy to make dish.

I love how easy this simple beef stew recipe is to prepare - all you really have to do is cut up the meat and mushrooms and dump everything in! You don't have to get messy coating the meat in flour and browning it in a skillet like a lot of recipes require. I used crimini mushrooms for this, and the sauce was really good. This would be great on top of buttered egg noodles, a bed of rice, quinoa, or even mashed potatoes.

This is easy and delicious. When I first got the recipe from a coworker about 40 years ago, it was called "Sherried Beef" and called for 3# of beef (I prefer round or sirloin) cut into 1"cubes, 2 cans cream of mushroom soup, 1 envelope of dry onion soup mix, 1# fresh mushrooms, sliced, and 1/2 C cooking sherry (or red wine, beef broth, or water), mixed in a 5 qt pan, covered and cooked at 300 for at least 3 a half hours. Do NOT peek util the time is up. The moisture from the fresh mushrooms, the beef, and the wine, makes a lovely gravy. It can cook for an hour or so longer without harm, and I'm sure that a slow cooker works very well. I like to serve it over noodles, but mashed potatoes are also very good. The 3# of beef makes 10-12 generous servings. It is even better when reheated the next day, so is good for making ahead or for planned-overs. It's a forgiving recipe, so you can experiment a bit, as long as there is sufficient liquid.


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