Cookie Butter Brioche Star

Ingredients (9)

• + 3 ⅓ cups bread flour add to pantry
• + ⅓ cup white sugar add to pantry
• + 2 teaspoons active dry yeast add to pantry
• ✓ 1 pinch salt
• + ¾ cup milk, warmed add to pantry
• ✓ 2 eggs, separated
• ✓ 2 tablespoons unsalted butter, melted
• + 1 teaspoon vegetable oil, or as needed add to pantry
• + 1 cup cookie butter (such as Biscoff®), divided add to pantry