Sweet Potato Sandwich Rolls Recipe

Ingredients (11)

• 3/4 cup (about 1 potato) sweet potato, mashed
• 3 cups (13 1/2 ounces) all-purpose flour, divided, plus more as needed
• 2 1/4 teaspoons instant dry yeast
• 1 tablespoon granulated sugar, or 2 tablespoons for sweeter rolls
• 1 teaspoon salt
• 1/2 cup milk
• 1 large egg
• 3 tablespoons butter, softened, plus more for the bowl
• 1 large egg white
• 1 tablespoon water
• Poppy seeds, or sesame seeds, optional for garnish