Creamy Mushroom Potato Bake - cooking recipe

Ingredients

2 1/2 - 3 lbs white potatoes, peeled
1 onion, finely chopped
1/2 lb fresh mushrooms, chopped
3 tablespoons butter or 3 tablespoons margarine, divided
1/2 cup sour cream
1 teaspoon salt
1/2 teaspoon pepper
1/4 cup grated parmesan cheese

Preparation

In a saucepan of boiling salted water, cook potatoes until tender; drain and mash.
In a skillet, melt 2 tablespoons butter; saute onion and mushrooms for 3-4 minutes or until tender.
Stir into potatoes; add sour cream, salt, and pepper; mix well.
Spoon into a greased 2 quart baking dish.
Sprinkle with Parmesan.
Dot with remaining butter.
Bake, uncovered at 400 degrees for 20-25 minutes or until heated and golden brown.