Combine all ingredients by hand or in a mixer. Knead or mix well to form a soft, smooth dough.
Cover and let rise at least 1 hour.
Separate dough into 100g pieces and oil each piece. For “pull-apart” buns, use 50g pieces.
For regular buns:
Shape each piece into a ball and press firmly with hand to flatten until it’s about the right diameter for your burgers.
For pull-apart buns:
Shape each piece into a ball and press very firmly with hand to flatten.
Stack two pieces together and press very firmly with hand to flatten. Buns should be about the right diameter for your burgers.
Place buns on baking sheet covered with parchment paper or reusable silicone pan liner.
Spray with oil and cover loosely with plastic wrap.
Let rise 1 hour.
Brush with beaten egg and sprinkle with sesame seeds if desired.
Bake in a preheated 375°F oven for 20 minutes or until golden.