Cheesy Beef Fiesta Tortilla Casserole Step-by-step instructions

Before you start

Before beginning the cooking process, organize all ingredients and equipment to ensure a smooth workflow. Measure out the ground beef, taco seasoning, and red enchilada sauce. Shred the cheese fresh from the block for the best melting capability.

Dice the tomatoes and chop the fresh cilantro, then set them aside in small bowls for the final garnish. Preheat the oven to 375°F (190°C) so it is ready to bake the casserole as soon as assembly is complete. Lightly grease the baking dish with cooking spray.

Instructions

Beef Preparation

1. 1Brown the Beef
   Place a large skillet over medium-high heat. Add the ground beef and cook, breaking it apart with a spatula, for 5 to 7 minutes until it is completely browned and no pink remains. Carefully drain any excess fat from the skillet.
   Look for The beef should be fully browned and crumbly.
   Tip Drain the fat to prevent the filling from becoming greasy.
2. 2Season the Beef
   Add the taco seasoning to the skillet with the browned beef. Stir well to combine, then reduce the heat to medium-low. Simmer the mixture for 3 to 5 minutes until the spices are fragrant and the beef reaches a safe internal temperature of 160°F (71°C). Remove from the heat.
   Look for The seasoning should coat the beef nicely.
   Safe temperature 160°F (71°C) internal temperature (ground meat)
   Tip Use a thermometer to verify the temperature.

At the end of this phase, the ground beef should be completely browned with no pink remaining, and the seasoning should be thoroughly combined and clinging to the meat.

The mixture will smell highly aromatic with notes of cumin, chili powder, and garlic. Ensure the beef has reached a safe internal temperature of 160°F (71°C) before proceeding to the assembly.

Casserole Assembly

3. 3Roll the Tortillas
   Preheat the oven to 375°F (190°C). Lay the flour tortillas flat on a clean work surface. Spoon an equal portion of the seasoned beef mixture down the center of each tortilla, then roll them up tightly.
   Look for The tortillas should be rolled snugly around the beef.
   Tip Warm the tortillas slightly if they feel too stiff to roll.
4. 4Assemble the Casserole
   Place the rolled tortillas seam-side down in a lightly greased baking dish. Pour the red enchilada sauce evenly over the top, making sure to cover all the tortillas. Sprinkle the shredded cheese generously over the sauce.
   Look for The tortillas should be completely covered in sauce and cheese.
   Tip Covering the edges prevents them from drying out.

At the end of this phase, the tortillas will be neatly rolled and packed tightly into the baking dish in a single layer. The rich red enchilada sauce will completely cover the rolled tortillas, and a generous, even layer of shredded cheese will coat the entire surface. No dry tortilla edges should be exposed to prevent burning.

Baking and Garnish

5. 5Bake the Casserole
   Place the baking dish in the preheated oven and bake at 375°F (190°C) for 15 to 20 minutes. The cheese should be completely melted, bubbly, and starting to turn golden brown around the edges.
   Look for Look for bubbling sauce and melted cheese.
   Tip Bake on the middle rack for even heat distribution.
6. 6Garnish and Serve
   Remove the casserole from the oven. Let it cool for 5 minutes before serving. Garnish the top with the diced tomatoes and chopped cilantro. Cut into portions and serve hot.
   Look for The fresh toppings will add bright color.
   Tip Letting it rest makes slicing much easier.

At the end of this phase, the cheese will be completely melted, bubbly, and starting to brown around the edges of the dish. Steam will rise from the center when a spatula is inserted. The fresh diced tomatoes and chopped cilantro will provide a vibrant contrast against the golden, melted cheese canopy.

Common mistakes

One common mistake is failing to cover the tortillas completely with the enchilada sauce. Any dry, exposed edges of the tortillas can become hard and chewy in the oven instead of tender. Ensure the sauce is spread evenly over every inch of the rolled tortillas.

Another mistake is using pre-shredded cheese, which contains starches that prevent a smooth, gooey melt. Shredding cheese from a block ensures a perfect cheese pull. Lastly, do not let the cooked beef sit at room temperature for more than 30 minutes before assembling and baking.

How to tell it’s done

The casserole is fully done when the cheese is completely melted, bubbly, and lightly golden brown on top. Because the ground beef is already fully cooked to a safe internal temperature of 160°F (71°C) during the skillet phase, the oven's primary job is to heat the casserole through, soften the tortillas, and melt the cheese.

Insert a butter knife into the center of the dish; it should feel hot to the touch when removed, indicating the interior is warmed through.

• Ground meat: 160°F (71°C) in the thickest part