Homemade Hamburger Buns are easy to make and will take your burgers over the top! Feel like you are eating at a gourmet burger bar with homemade buns, and they are freeze-able too!
In a large mixing bowl, or in the bowl of a stand mixer, combine the yeast, sugar, salt, milk, and water.
Add in the melted butter and 3 1/2 cups of the flour. Begin mixing on a low speed until all of the flour is stirred in. Slowly add in the remaining flour 1/2 cup at a time until the dough is tacky, but doesn't stick to your hands. The dough should be nice and smooth.
Transfer to a lightly greased large mixing bowl and let rise until double in size, about 1 hour.
Divide the dough into 12 equal portions and roll into balls. Press each ball between your hands to flatten. The dough will spring back a bit giving you about a 1/2-inch disc. Place the disc onto a lightly greased baking sheet.
Whisk together the egg and 1 tablespoon water to form an egg wash. Brush the tops of the discs. This will give them a nice shiny brown finish. Sprinkle sesame seeds on top, if desired, to make sesame seed buns.
Bake in a 400 degree oven for about 12 minutes, until lightly browned.