Buttery Sweet Potato Rolls

Bahan-bahan (24 porsi)

• 1 tablespoon dry yeast
• 1 cup 2% or whole milk (warmed to 100 to 110 degrees F.)
• 3/4 cup sweet potatoes (mashed*)
• 1 tablespoon butter (melted)
• 2 & 1/4 teaspoons kosher salt (**)
• 2 large egg yolks
• 4 & 1/2 cups bread flour (plus more)
• Cooking spray
• 3 tablespoons butter (melted)
• sea salt (for sprinkling)