Cook roast as preferred – crockpot, dutch oven, grill. (I usually cook mine in a crockpot with onions, carrots, and peppers around it. I prepare it with 1 package Lipton Onion Soup and a canned coke. I cook it for 4 hours on high or 8 hours on low)
Fill stock pot with water and salt to season.
Bring water to boil.
Dice potatoes for mashed potato topping.
Once the water comes to a boil, drop in potatoes.
Boil for 15 minutes or until potatoes are tender when checked with a fork.
Chop leftover meat and set aside in baking dish.
Dice and cube leftover potatoes, carrots and onions and place in baking dish with meat.
Drain au jus through a strainer to remove extra bits.
Pour au jus into skillet and heat to a boil.
Remove 1 Cup juice and place in mason jar or bowl.
Stir in flour.
Replace lid and shake or stir together with a fork to make a slurry. (Be careful so it doesn’t burst)
Pour through strainer in to boiling au jus in skillet.
Continue stirring until thickened.
Immediately remove from heat.
Stir in diced tomatoes with green chilies.
Pour over meat and vegetables.
Stir together in baking dish until all is combined.
Spread evenly in baking dish.
Drain boiled potatoes.
Mash potatoes with hand mixer or fork.
Add in butter, milk, cheese, salt & pepper, etc to make desired taste.
You will want thinner mashed potatoes to spread over top.
Top meat mixture with mashed potato mixture, spreading evenly across the top.
Store in refrigerator or freezer until ready to serve.
Unthaw completely if frozen.
Bake, covered with foil, for 30 minutes at 350.
Remove foil for last 5 minutes or until edges are bubbly.
Serve hot.
Great to mix with green beans or a side salad.