In a small bowl or measuring cup, combine 3 Tbsp warm water and yeast. Allow to proof and get foamy.
In another bowl, combine flour, salt and sugar.
Add in butter and rub butter into flour with your fingers, it will form crumbs.
Mix in yeast mixture and 1 cup water and 1 egg
Knead until smooth and elastic. Dough will be slightly sticky.
Allow dough to rise for 1 hour or until doubled.
Divide dough into equal pieces and form each into a ball that is round on the top and flat on the bottom.
Place on a parchment paper lined baking sheet.
Cover loosely with plastic wrap sprayed with non stick cooking spray and allow to rise for 30 minutes.
Use other beaten egg to brush the tops of the buns and sprinkle with sesame seeds or poppy seeds if desired.
Bake at 400 degrees F. for 15 minutes or until golden brown.
Video
Notes
If using rapid rise yeast you don't need to proof the yeast, just add it in with the dry ingredients and then pour in water.You can form this dough into any shape you want. It works for hot dog buns and slider buns too.