To begin, make sure your starter is in the active, bubbly phase. Depending on the strength of your starter and the time of year (temperature makes a big difference), you most likely will want to feed your starter 6-12 hours before you start this recipe. I generally do it the night before and then start the dough in the morning.
To the bowl of your stand mixer, add flour, sugar, and salt, active sourdough starter, ½ stick of butter (melted) and water. Use the dough hook attachment and mix on medium speed until it forms a smooth elastic ball. This can take up to 10 minutes.
Cover with a damp towel or plastic wrap and allow to sit at room temperature for about 8-10 hours, the dough should double in size.
Once the dough has finished the first rise, cut into 12 equal pieces. You can eyeball it, but mine averaged about 60 grams a pieces. Using your hands, roll each piece into a cylander that is around 6 inches long. Place on a parchment paper lined baking sheet.
Allow to rise for 1-2 more hours, until fluffy.
Preheat oven to 400 degrees. Bake breadsticks for approximately 15 minutes.
Combine melted butter, salt, italian seasoning, and garlic powder in a small bowl.
Remove from the oven and immediately brush on flavored butter. They are best served warm.