Philly Cheesesteak Casserole with Gooey Melted Cheese Step-by-step instructions

Before you start

Before you begin, ensure all ingredients are measured and ready. Dice the red bell peppers uniformly so they cook evenly with the beef. Preheat your oven to 400°F (200°C) so it is ready for the final baking stage.

Clear your workspace to allow for efficient movement between the stovetop and the oven. Having your baking dish nearby will make the assembly process seamless and help keep the beef mixture warm before it hits the oven.

Instructions

Searing and Sautéing

1. 1Prepare the beef and peppers
   Heat a large skillet over medium-high heat. Add the ground beef and cook until browned and fully cooked through, ensuring the internal temperature reaches 160°F (71°C). Drain any excess fat. Add the diced red bell peppers to the skillet and sauté until they are tender and fragrant.
   Look for The beef should be browned and the peppers softened.
   Safe temperature 160°F (71°C) internal temperature (ground meat)
   Tip Ensure the pan is hot enough initially to get a good sear on the meat for better flavor development.

The ground beef should be deeply browned and the red peppers should be softened and slightly charred. The mixture should smell savory and aromatic. Before moving to the assembly, ensure the excess fat has been drained from the pan to prevent the final casserole from being overly oily or heavy.

Assembly

2. 2Assemble the casserole
   Transfer the cooked beef and pepper mixture into a 9x13 inch baking dish. Spread the mixture evenly across the bottom of the dish to create a uniform base for the cheese layer.
   Look for The mixture should be spread evenly to ensure consistent heating.
   Tip Press down lightly with a spatula to create a flat surface for the cheese topping.

The beef and pepper mixture should be spread into an even layer within the baking dish. It should look cohesive and well-mixed.

Ensure there are no large clumps of meat and that the peppers are distributed throughout. This even base is essential for the cheese to melt and brown uniformly during the final baking phase.

Baking

3. 3Bake and garnish
   Top the beef mixture with the shredded mozzarella cheese. Place the dish in a preheated oven at 400°F (200°C) and bake until the cheese is melted, bubbling, and golden brown on top. Remove from the oven, let it rest for 5 minutes, garnish with fresh parsley, and serve.
   Look for The cheese should be bubbly and golden brown.
   Tip Keep a close eye on the oven during the last few minutes to prevent the cheese from burning.

The cheese should be completely melted, bubbling vigorously, and showing golden brown spots on the surface. The edges should look slightly crispy. The casserole should be hot throughout. Let it rest for a few minutes before garnishing with fresh parsley to allow the cheese to set slightly for easier serving.

Common mistakes

A common mistake is overcrowding the skillet when browning the beef, which causes the meat to steam rather than sear. Work in batches if necessary to maintain high heat.

Another mistake is failing to drain the rendered fat from the beef, which can lead to a greasy casserole. Finally, avoid over-baking the dish, as this can dry out the meat and cause the cheese to become tough or oily instead of stretchy.

How to tell it’s done

The casserole is done when the cheese is fully melted, bubbling across the entire surface, and has developed a deep golden-brown color. The beef should have been cooked to an internal temperature of 160°F (71°C) before adding the cheese, ensuring it is safe to eat.

The casserole should be served while hot to maintain the gooey texture of the melted cheese, which is the hallmark of this delicious dish.

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