Preheat oven to 375 degrees.
Grease or line baking sheet with parchment paper.
Mix together flour, sugar, baking soda, baking powder, and salt. Create a well in the center of the dry ingredients.
In the well add 1/2 cup butter, 1 cup buttermilk, and egg. Mix until combined, being careful not to overmix.
Flour work surface.
Place dough on floured surface and knead briefly.
Shape dough into a round ball and place on prepared sheet.
Whisk together 1/4 cup melted butter with 1/4 cup buttermilk.
Brush loaf with buttermilk mixture.
Cut an X in the top of the loaf.
Bake for about 45 minutes or until toothpick inserted into the middle comes out clean.
Brush with buttermilk mixture every 15 minutes while baking.
Enjoy!