1 (1/4-ounce) package active dry yeast
3/4 cup warm water (105 to 115°F)
2 1/2 to 2 3/4 cups all-purpose flour
1/2 cup lukewarm mashed potatoes
1/3 cup honey
3/4 teaspoon salt
1 cup whole wheat flour
Dissolve yeast in warm water in bowl. Add 1 cup all purpose flour and all remaining ingredients except whole wheat flour. Beat at medium speed, scraping bowl often, until smooth. Stir in whole wheat flour and enough remaining all-purpose flour to make a soft dough. Turn dough onto lightly floured surface; knead about 5 minutes or until smooth and elastic.
Place into greased bowl, turn greased-side up. Cover bowl tightly; refrigerate at least 8 hours but no longer than 5 days. Punch down dough. Shape into 20 balls with floured hands; place into greased 13x9-inch baking pan. Cover; let rise 1 1/2-2 hours until double in size.
Heat oven to 375°F. Bake 25-30 minutes or until golden brown. Brush tops of rolls with butter, if desired.
To bake rolls immediately, prepare and shape as directed above. Let rise in warm place 45-60 minutes or until double in size. Bake as directed.