Gluten Free Pumpkin Muffins with Nutella Swirl

Name: Gluten Free Pumpkin Muffins with Nutella Swirl
Prep time: 20 min
Cook time: 18 min
Total time: 38 min
Ingredients: 1 ¾ cups gluten free flour blend (see notes); 1 teaspoon xanthan gum; 1 teaspoon baking soda; ½ teaspoon fine sea salt; 2 teaspoons pumpkin pie spice; 2 large eggs (room temperature); 1 cup light brown sugar (lightly packed); 1 cup pumpkin puree; 1/3 cup avocado oil (or neutral oil of choice); ¼ cup milk (room temperature (see notes for dairy free)); 1 teaspoon pure vanilla extract; ¼ cup Nutella (see notes for dairy free)