Part 3/7:
With our sauce ready, it's time to prepare the filling. For a classic touch, use a combination of mashed potatoes and cheese. After boiling the potatoes for about 45 minutes, peel and let them cool. Now, mash the potatoes and season them with garlic salt and black pepper to enhance their flavor.
Next, incorporate about a quarter cup of the enchilada sauce you've just prepared and some crumbled queso Oaxaca or any favored melting cheese into the potato mixture. Stir well to combine the ingredients and set the filling aside.