Ingredients

1 package (1/4 ounces) active dry yeast1 cup warm water (110° to 115°)1 cup quick-cooking oats1/4 cup butter, softened1/4 cup instant nonfat dry milk powder1 egg, separated2 tablespoons sugar1 teaspoon salt2-3/4 to 3-1/4 cups all-purpose flour2 tablespoons sesame seedsBURGER:1 egg, beaten3/4 cup ketchup3/4 cup quick-cooking oats1 teaspoon salt1-1/2 pounds ground beefLettuce leaves4 slices process American cheese

Preparation

In a large bowl, dissolve yeast in water. Add oats, butter, milk powder, egg yolk, sugar, salt and 1 cup of flour; beat until smooth. Add enough remaining flour to form a stiff dough. 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 and refrigerate for 8 hours or overnight. Cover and refrigerate egg white.

Punch dough down and shape into a ball. Press into a greased 9-in. round baking pan. Cover and let rise in a warm place until nearly doubled, about 45 minutes. Brush with egg white; sprinkle with sesame seeds. Bake at 350° for 30 minutes or until golden brown. Remove from pan to a wire rack to cool.

Combine the first four burger ingredients; crumble beef over mixture and mix well. On a greased broiler pan, shape meat mixture into an 8-1/2-in. patty.

Bake, uncovered, at 350° for 30 minutes or until a thermometer reads 160°. To serve, split bun in half. Place lettuce, burger and cheese on bun bottom; replace top. Cut into wedges.