Long-Fermentation Sourdough Bread

Ingredients (8)

• ✓ 2 cups all-purpose flour
• ✓ 1 cup water
• + ⅓ cup sourdough starter add to pantry
• ✓ 3 tablespoons butter, melted
• + 1 tablespoon white sugar add to pantry
• + ¾ teaspoon sea salt add to pantry
• + 1 teaspoon oil, or as needed add to pantry
• + 1 egg, beaten add to pantry