In a small bowl combine oats, boiling water and 1 Tbls sugar. Stir until well combined. Let stand for 5 minutes.
In a 1 cup measuring cup dissolve yeast and 1 1/2 teaspoons sugar in warm water. Let stand 5 minutes.
In a large bowl combine 1 3/4 cups of flour, oat mixture, buttermilk, melted butter, salt and yeast mixture. Stir until it forms a soft ball. Turn dough onto lightly floured surface and knead for 8 minutes (until smooth and elastic). Add additional flour 1 Tbls at a time as needed. The dough will be slightly sticky.
Place dough in an oiled bowl, turning to coat. Cover and let rise for 45 minutes or until doubled in size.
Punch down the dough. Cover and let rest for 5 minutes.
Divide dough into 12 portions. Roll each portion into a ball. Place in a 9 inch square baking dish, coated with non stick spray. Cover and let rise for 30 minutes, or until doubled in size.
Preheat oven to 375 degrees.
In a small bowl combine 1 Tbls water with egg white. Gently brush over the top of the rolls. Sprinkle with oats.
Bake for 25 minutes or until golden brown.
Remove from oven and serve warm.