4 lbs. med. size all-purpose potatoes, peeled
7 tbsp. butter
1 c. finely chopped onions
4 slices white bread, cut in 1/2 inch sq.
1/2 c. milk
3 lg. eggs
1 tsp. salt
1/2 tsp. black pepper
1/4 c. pkg. plain bread crumbs

Cook potatoes in large pot of boiling water until tender, about 25 minutes. Meanwhile melt 2 tablespoons butter in a medium size skillet over medium low heat. Add onion and cook 6-8 minutes, stirring 3-4 times, until translucent. Remove from heat. Add bread squares and toss to coat.

Heat oven to 350 degrees. Grease a shallow 3 quart baking dish. Drain potatoes and put into a large bowl. Add milk, eggs, salt, pepper and 3 tablespoons butter. Using a potato masher, mash until smooth. Stir in bread mixture.