Chef John Hamburger Buns

Ingredients for 8 large hamburger buns:
1 package (2 1/2 tsp) dry active yeast (I used Fleischmann's “RapidRise” Yeast)
1 cup very warm water
1 large egg
3 tablespoons butter
3 tablespoons sugar
1 1/4 teaspoons salt
1 pound all-purpose flour (about 3 1/2 cups)
Note: add a 1/2 cup of the flour to the yeast and water, and then the remainder before kneading

for the tops:
1 egg beaten with 1 tbsp milk
sesame seeds
*bake at 375 degrees F. for 15-17 minutes