Making Bagels Softer on the Outside

I made my first batch of bagels. They came out great on the inside (soft and chewy), but a little hard on the outside. From the recipe below, how can I modify it to make the outside softer? Thanks.

Recipe (makes 8 bagels)

• 4 cups of bread flour
• 1 Tbsp sugar
• 1.5 Tbsp salt
• 1 Tbsp vegetable oil
• 2 tsp yeast
• 1.25 to 1.50 cups of warm water

Mix all in a bowl, knead for 10 minutes, cut into 8 balls. Let rest for 10 - 20 minutes. Preheat oven to 425. Roll balls into bagel shape. Rest bagels for 20 minutes. Boil bagels for one minute on each side. Dry for one minute. Bake 10 minutes each side. Cool at least 20 minutes.

Thank you.

By John from Saint Augustine, FL