Cube the beef into bite-sized pieces.

Heat oil in a large pot or Dutch oven over medium-high heat.

Add the chopped onion to the pot and sauté until softened and translucent.

Add the cubed beef to the pot along with the sautéed onions.

Stir in the Hungarian paprika, salt, and pepper, ensuring the meat is well coated.

Continue to stir until the meat begins to release its juices, preventing the paprika from burning.

Add water, about 1/2 cup at a time, as needed to keep the meat simmering gently.

Cover the pot and simmer until the beef is tender, approximately 60-75 minutes.

Add the cubed potatoes to the pot and continue to cook until they are tender.

Shortly before the potatoes are fully cooked, add the chopped tomatoes to the pot.

Simmer until the tomatoes are heated through and slightly softened.

Adjust seasoning as needed.

Serve hot.