1/3 cup mashed potatoes (without added milk and butter), room temperature
1/4 cup butter, melted
1 tablespoon sugar
1 teaspoon salt
3-1/2 to 4 cups all-purpose flour
In a bowl, dissolve yeast in water. Add milk, potatoes, butter, one egg, sugar, salt and 2 cups flour; beat until smooth. Add enough remaining flour to form a soft dough. Turn onto a floured surface and knead until smooth and elastic, about 6-8 minutes. Place in a greased bowl, turning once to grease top. Cover and let rise in a warm place until doubled, about 1 hour. Punch dough down. Divide into 12 pieces; shape each into a smooth ball. Place in a greased 13-in. x 9-in. baking pan. Cover and let rise in a warm place until doubled, about 30 minutes. Lightly beat remaining egg; brush over rolls. Bake at 375° for 20-25 minutes or until golden brown. Remove from pan to a wire rack.