01 - In a large mixing bowl, combine warm water (about 110°F), sugar, and instant yeast. Let the mixture rest for approximately 5 minutes until it becomes frothy and bubbly, indicating the yeast is active.
02 - Add the all-purpose flour, salt, and softened butter to the yeast mixture. Stir until a shaggy dough comes together, then turn out onto a lightly floured surface.
03 - Knead the dough by hand for 7 to 8 minutes, or use a stand mixer fitted with a dough hook for 5 minutes, until the dough is smooth, elastic, and springs back when gently pressed.
04 - Transfer the dough to a lightly greased bowl, turning once to coat. Cover tightly with plastic wrap or a clean kitchen towel and place in a warm, draft-free spot until doubled in size, about 1 hour.
05 - Preheat the oven to 400°F. Line a large baking sheet with parchment paper and set aside.
06 - Gently punch down the risen dough to release air bubbles. Divide into 12 equal portions. Roll each piece into a rope approximately 7 to 8 inches long and arrange on the prepared baking sheet, spacing about 2 inches apart.
07 - Loosely cover the shaped breadsticks with a kitchen towel and let them rest in a warm area for 20 to 30 minutes until puffed and nearly doubled.
08 - Bake on the center rack for 12 to 15 minutes, rotating the pan halfway through, until the breadsticks are lightly golden on top and sound hollow when tapped on the bottom.
09 - While the breadsticks bake, whisk together the melted butter, minced garlic, salt, and chopped parsley in a small bowl until well combined.
10 - Immediately upon removing the breadsticks from the oven, generously brush each one with the garlic butter mixture, ensuring even coverage. Transfer to a serving basket or platter and serve warm.