Grease 9x5- or 8x4-inch loaf pan with shortening or cooking spray. In large bowl, mix boiling water, oats, shortening, molasses and salt; cool to lukewarm. In small bowl, dissolve yeast in warm water. Add yeast mixture, egg and 1 1/2 cups of the flour to oat mixture. Beat with electric mixer on medium speed 2 minutes, scraping bowl frequently. Stir in remaining flour until completely mixed.