Air Fryer Donuts

Ingredients

• ½ teaspoon salt
• 1 tablespoon light corn syrup
• ¼ cup melted unsalted butter
• 1½ teaspoons vanilla extract
• 1 egg yolk
• 2 cups powdered sugar
• 2¼ teaspoons active dry yeast
• ¼ cup warm milk
• 1 egg
• ½ cup warm water
• 2½ cups all-purpose flour (add more if needed)
• ⅓ cup granulated sugar plus an extra tablespoon
• ¼ cup milk
• Cooking spray
• 1 teaspoon vanilla extract