My momma (Mommaw) used to make this almost every Sunday.
Ingredients
Sirloin roast
1 envelope French onion soup mix
Water
Preheat oven to 350°.
Place roast into 9×13″ baking dish. Mix together soup mix and 1/2 cup of water, then pour over roast.
Next, add in enough water so there is about 1/4-inch of it in the pan.
Cover with foil and bake for about an hour or until meat is fork tender.
To make gravy, mix together 3 tablespoons of corn starch and 1 cup water in a small sauce pan. Stir in drippings, and bring this to a boil. Remove from heat. If it tastes bland, add in a cube of beef (or chicken) bouillon. If it’s too strong, add in more water and 1 teaspoon cornstarch.