Low FODMAP Baked Doughnuts - FODMAP Everyday

Ingredients

• 2 1/4 cups (326 g) low FODMAP gluten-free all-purpose flour, (such as King Arthur Measure for Measure Gluten-Free Flour)
• ¾ cup (149 g) sugar
• 2 tablespoons cornstarch
• 2 teaspoons baking powder; (use gluten-free if following a gluten-free diet)
• 1 teaspoon salt
• ½ teaspoon baking soda
• ½ teaspoon nutmeg
• ¼ teaspoon xanthan gum
• 1 cup (240 g) lactose-free sour cream, (at room temperature)
• ¼ cup (60 ml) neutral flavored oil, (such as canola)
• 2 large eggs, (at room temperature)
• 2 teaspoons vanilla extract
• Pastry bag
• ½- inch (12 mm) round tip (such as Ateco #806)
• 1 cup (198 g) sugar or superfine sugar
• 1 1/2 teaspoons cinnamon
• 1 cup (90 g) sifted confectioners’ sugar
• 2 1/4 cups (202 g) sifted confectioners' sugar
• 1/3 cup (75 ml) hot lactose-free whole milk
• 3 tablespoons honey
• 1 tablespoon unsalted butter, (melted)
• 1/4 teaspoon vanilla extract