Long-Fermentation Sourdough Bread

Ingredients (8)

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