Add active sourdough starter, water, egg, oil, honey, salt and flour to the bowl of a stand mixer fitted with a dough hook. Mix lightly until the dough comes together.
Knead for 8-10 minutes on low speed until the dough passes the windowpane test. Form into a ball and transfer to an oiled mixing bowl.
Lightly cover the bowl with plastic wrap or a clean kitchen towel. Set the bowl in a warm place for 6 hours to ferment and proof.
Turn your dough out onto a lightly greased surface and roll it out into a rectangle. Fold in the sides and roll it over into a log. Pinch the seam and the ends of the log closed. Place the loaf seam-side down in a greased 8.5x4.5-inch loaf pan.
Cover loaf with a plastic wrap and place in a warm spot to proof until the loaf fills the pan and rises above the top by an inch. It should take about 1.5-2 hours.
Bake in a 350°F oven on the center rack for 25-30 minutes or until the bread is golden and sounds hollow when tapped.
Run a kitchen knife around the edges of the loaf to loosen it from the pan. Remove loaf to a cooling rack.
Notes
If you’re kneading the dough by hand it will take closer to 10 minutes for the gluten to be developed enough.
For an overnight option, proof the bread in the refrigerator and finish the final proofing at room temperature.
Store this bread wrapped in plastic wrap or aluminum foil at room temperature. It should last between 5-7 days before it dries out.
Do not store this bread in the refrigerator after it’s baked because it will dry out quickly.
This bread can be frozen after it’s baked by wrapping it in plastic wrap and placing it in a ziplock freezer bag. It can last up to 3 months and be defrosted at room temperature when you’re ready to use it.