Soft and Pillowy Blueberry Breakfast Rolls

Ingredients

• ¼ cup warm water (110°)
• 1 (¼ ounce) packet active dry yeast
• 1 teaspoon sugar (for activating yeast)
• 1 cup warm half and half
• ½ cup sugar
• 2 eggs
• ½ cup (approximately) mashed potato, room temp (*see note below)
• 1 tablespoon pure vanilla extract
• ½ cup unsalted butter, melted
• 1 teaspoon salt, plus a pinch or two, divided use
• 3 ¾ – 4 cups all-purpose flour, plus extra for rolling dough
Filling:
• 1/3 cup sugar
• 1 teaspoon lemon zest
• 3 tablespoons butter, softened
• ½ cup blueberry preserves
• 1 (6 oz) package fresh blueberries
Creamy Vanilla-Lemon Icing Ingredients:
• 3 cups powdered sugar
• 1 teaspoon pure vanilla extract
• 4 tablespoons milk
• 1 teaspoon lemon zest
• 1 tablespoon lemon juice