Gluten Free Maple Walnut Bread - Maple from Canada

Ingredients

• 2-1/4 cups gluten free flour blend (such as King Arthur)
• 2/3 cup tapioca flour
• 2/3 cup potato starch
• 1 Tbsp baking powder
• 1/2 tsp baking soda
• 1 1/2 tsp xanthan gum
• 1 1/2 tsp ground cinnamon
• 1 tsp salt
• 1 cup pure maple syrup from Canada
• 1 cup buttermilk, at room temperature
• 2 large eggs
• 1 stick unsalted butter, softened
• 3/4 cup chopped walnuts