In a small bowl, dissolve yeast in warm water. In a large bowl, combine sugar, oil, eggs, potato flakes, salt, yeast mixture, all-purpose flour and 2-1/2 cups whole wheat flour. Beat until smooth. Stir in enough remaining whole wheat flour to form a soft dough (dough will be sticky).
Turn onto a floured surface; knead until smooth and elastic, about 6-8 minutes. Place in a greased bowl, turning once to grease the top. Cover with plastic wrap and let rise in a warm place until doubled, about 1-1/2 hours.
Punch down dough. Turn onto a lightly floured surface; divide and shape into 24 balls. Place 2 in. apart on greased baking sheets. Cover with kitchen towels; let rise in a warm place until doubled, about 30 minutes.
Preheat oven to 375°. Brush tops with melted butter; if desired, sprinkle with oats. Bake 9-11 minutes or until lightly browned. Serve warm.Yield: 24 rolls.