In a small saucepan, boil a small amount of salted water for cooking the potatoes.
Peel the potatoes, removing a very thin skin, rinse and cut into halves or quarters.
Immerse the potatoes in salted boiling water and cook until tender.
Meanwhile, peel and chop the onion.
In a skillet, sauté the onion in the oil until tender.
Add the ground beef and cook until there is no trace of pink flesh.
Remove excess fat. Salt and pepper. Place the meat in a small baking dish.
Spread the creamed corn over the meat.
Preheat the oven to 190 ° C (350 ° F).
Drain the potatoes well, then mash the potatoes with a masher.
Add milk and beat well with a pestle to make a very light purée. Check the seasoning.
Cover the ground meat and creamed corn with mashed potatoes, using a rubber spatula.
Sprinkle with paprika, then bake for about 25 minutes until the top is golden.