Place the beef roast in a large resealable freezer bag. Add the other ingredients and seal the bag before freezing.
Cooking Instructions:
Thaw. Cook in the slow cooker on low for 6-8 hours. Slice and serve on buns, using the juices from the roast for dipping.
Instant Pot Cooking Instructions:
Thaw. Place contents of bag into the instant pot. Pressure Cook at High Pressure for 45 minutes + 25 minutes Natural Release. Slice or shred the beef and serve on buns, using the juices from the roast for dipping.
Notes
You can top the buns with garlic mayo. before adding the beef if you want. Dipping it in the au jus with the goopy garlic mayo just adds to the experience!Be sure to use a gluten free dry onion soup mix if you need this gluten free.Three tablespoons of dry onion soup mix is equal to one packet.