Sunny takes enchiladas to new heights with this tall, layered pie- well-seasoned beef gets stacked with red sauce, corn tortillas and two kinds of cheese. Put the baking dish on a baking sheet in the oven to catch any cheese drips-this pie's a bubbly one.
To achieve optimal flavor depth for the sauce, ensure the tomato paste is properly 'bloomed' by cooking it until it deepens in color before adding liquids. This caramelizes its sugars and eliminates any raw taste. For the beef filling, thoroughly brown the ground beef to develop rich, savory notes. Be cautious with added salt, as Spanish seasoning blends like Sazon often contain significant sodium. Dunking the corn tortillas in the warm red sauce before layering is critical; this hydrates them, preventing a dry casserole and ensuring a tender texture throughout. When baking, always use a sheet pan underneath the casserole dish to catch any cheese overflow, keeping your oven clean. If the top begins to brown too quickly, loosely cover it with foil to prevent scorching while the inside heats through.