The Easiest 3 Ingredient Crock Pot Roast Ever! (Slowcooker)

READY IN: 8hrs 5mins
Recipe by Kats Mom

This recipe is so good and so easy that I always assumed it was on Zaar. But search as I might, I just couldn't find it here. Not only is it easy, it is delicious and makes your house smell amazing! :) It turns out so tender that you can cut it with a fork. If you would like to make it a meal, add a can each of carrots, potatoes, green beans and/or corn about an hour before serving.

Top Review by Terri Newell

Yum! My teenage son made this for supper today, and it was easy and delicious. We used a pork roast instead of beef, and as written, we thickened the juice for gravy. We served it on large flour tortillas rolled up burrito-style, and dipped them in the gravy. So tasty. No leftovers!

Ingredients Nutrition

  • 3 lbs pot roast (use the cheapest cut of beef you can find)
  • 34 ounce onion soup mix
  • 2 tablespoons prepared yellow mustard (more or less to taste)

  • 2 tablespoons cornstarch
  • 4 tablespoons water


  1. Place roast in a large crock pot.
  2. Squirt or spread a thin layer of mustard over the roast.
  3. Sprinkle onion soup mix on top.
  4. Cook 8 hours on low (8 hours on high if roast is frozen).
  5. OPTIONAL GRAVY: Strain the fat off the liquid and discard fat.
  6. Place reserved liquid in a sauce pan and bring to a slight boil.
  7. Add cornstarch to the water and make a paste.
  8. Add paste to the reserved liquid and whisk until thickened.
  9. NOTE: Do not add water to this - it will effectively "steam" the roast and make it tougher. Believe it or not, this will make its own liquid.

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