I'm terrible with recipes. My casseroles and one-pot dishes are all my own concoctions unfortunately.
For a good beef casserole, I tend to use chuck steak. This cut lends itself really well to slow cooked on-pot recipes.
I brown off an onion, crushed garlic, add the cubed beef, stir until until sealed. Add your choice of cubed vegetables - carrot rings, button mushrooms, cubed sweet potato. Keep stiring for 5 minutes or so. Add a good dessert spoon of tomato paste, a tin of crushed tomatoes and a cup or two of beef stock (this depends on your quantities). You can also add finely chopped flat leaf parsley, basil, thyme or rosemary. Whatever you prefer or have on hand. Finally, a good grinding of salt & pepper.
Let it simmer for up to a couple of hours. I've deliberately left out potatoes, I prefer to serve with mashed potatoes and fresh beans. Or, serve with Parmesan dumplings.