Prepare the mashed potato by boiling 6 cups of water in a cooking pot. Add 1 teaspoon salt.
Put the tomatoes in boiling water and boil for 15 to 20 minutes or until very tender. Remove from the pot. Set aside.
Melt butter in a sauce pan. Add milk. Stir. Cook until milk starts to boil.
Mash the potato and then pour the milk and butter mixture. Add Salt and pepper. Mix well. Set aside.
Make the Salisbury steak by combining the steak ingredient listed above in a bowl, except for oil and butter. Freeze the beef cube and grate using a cheese grater. Mix everything together. Scoop around 4 tablespoons of mixture and roll into a ball. Flatten and place in a clean plate.
Melt butter in a pan. Add olive oil. Pan-fry each side for 4 minutes. Place in a clean plate. Set aside.
Prepare the gravy by pouring the oil used to cook the burger patty into a sauce pan.
Saute the onion until soft. Add ketchup, Worcestershire sauce, and water. Let boil. Add Knorr beef cube. Stir and continue to cook for 2 minutes.
Combine cornstarch with 3 to 4 tablespoons water. Stir and pour into the pot. Stir until the gravy thickens.
Arrange the mashed potato on a plate. Top with Salisbury Steak and Gravy. Serve!
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