Quick(er) Cinnamon Buns

Ingredients

• 3 cups all-purpose gluten-free flour
• 2 ¼ teaspoons xanthan gum (omit if using flour that contains xanthan gum already)
• ¼ teaspoon kosher salt
• 1/3 cup sugar
• 4 teaspoons active dry yeast
• ¼ teaspoon cream of tartar
• ½ teaspoon ground cinnamon
• 4 tablespoons vegetable shortening
• 1 teaspoon vanilla extract
• 2 extra-large eggs
• 1 ½ cups nondairy milk
• 2 tablespoons grapeseed oil
• 2/3 cup light brown sugar
• 1 teaspoon ground cinnamon
• 1/8 teaspoon kosher salt
• ¾ cup confectioner’s sugar
• 2 to 4 tablespoons nondairy milk