Gratin a L’alsacienne

5 lbs Rose Gold potatoes, boiled
½ cup chopped parsley
Rosemary to taste
Salt and pepper to taste
1.5 lbs bulk sausage
1 cup chopped onions
Milk for mashing the potatoes
1 cup of Gorgonzola cheese, crumbled
Chopped tomato or red pepper for garnish

Brown the sausage, remove from pan. Sauté the chopped onions in the same pan. Mash the potatoes. Add herbs and cheese to the potatoes. Combine sausage and onion mixture, add potatoes, cheese herb mixture. Spread into baking dish. Sprinkle chopped tomatoes and additional parsley over top. Bake at 400 degrees for 20 minutes.