1In 12-inch nonstick skillet, cook sausage over medium-high heat 5 to 7 minutes, stirring frequently, until no longer pink.
2Stir mushrooms, potatoes, salt and pepper into sausage. Cook over medium heat about 8 minutes, stirring frequently, until potatoes begin to brown. Reduce heat to low.
3Using back of spoon, make 6 indentations in potato mixture. Break 1 egg into each indentation. Cover and cook 8 to 10 minutes or until egg whites are set and yolks are beginning to thicken.
4Sprinkle with cheese and tomato. Cover and cook 3 to 4 minutes or until cheese is melted.