Prepare all the ingredients
Slice the potatoes then boil.
Preheat the sauté pan then add oil. Sauté ground beef
Add onions. When onions are translucent, add seasoning
Pour in the flour. Let the flour cook. After a few minutes, add milk
Remove the potatoes from the boiling water. Set aside
Add in cream of mushroom to the sauté pan. When you see it has thickened, pour in the beans
Start making the casserole: In a baking dish, lay the potatoes first, then the ground beef
Do the next layer. Top it with grated cheese
Bake at 325 °F until the cheese is completely melted
Remove from the oven then serve. Enjoy your delicious meal!