For the Dough:
1/2 cup warm water
2 tablespoons sugar
2 tablespoons yeast
1 egg
2 cups bread flour
1/2 teaspoon salt
2 tablespoons butter

For the Filling:
Several stalks of green onion
1-2 tablespoons salt
1 tablespoon olive oil
1 tablespoon sesame oil

Egg wash (1 egg beaten with water)
Black and white sesame seeds to garnish

Dissolve the sugar in warm water and sprinkle yeast on top. Let rest for 10 minutes or until foamy. Combine and mix the flour and salt in a large bowl. Add the yeast mixture, egg, and butter to the dry mixture. Mix the dough until it comes together. Move the dough onto a well-floured surface and knead for several minutes until dough is smooth. Add additional flour as needed. Transfer dough to a lightly greased bowl. Cover with a towel or plastic wrap and allow it to double in size, roughly one hour. (You can also refrigerate the dough overnight, but make sure to let dough sit at room temperature for 20-30 minutes to warm up before rolling). Punch the dough with your fist. Roll the dough into a rectangle of approximately 1/3 inch thick. Spread the olive oil and sesame oil onto the dough. Sprinkle the salt and green onion evenly over the dough. Roll and cut the dough into 16 pieces. Line two loaf pans with parchment paper and place 8 rolls into each pan. Cover the pans with a damp cloth and let the rolls rise in a warm place for approximately 30 minutes. Brush the rolls with the egg wash and sprinkle the tops with black and white sesame seeds. Bake at 400F for 30-40 minutes or until a toothpick inserted into the center of a roll comes out clean. Serve with dinner or enjoy as a snack!