Cheesy Philly Cheesesteak Casserole Step-by-step instructions

Before you start

Before beginning the cooking process, organize all ingredients and equipment to ensure a smooth workflow. Dice the green bell peppers into uniform, bite-sized pieces and set them aside. Whisk the eggs thoroughly in a medium bowl until the yolks and whites are completely integrated and slightly frothy.

Measure out the shredded cheese. Preheat the oven to 375°F (190°C) and place a grey baking dish nearby. Having everything prepped and ready allows for seamless transitions between the stovetop browning and the final oven baking.

Instructions

Sizzling the Beef and Peppers

1. 1Brown the Beef and Peppers
   Heat a large skillet over medium-high heat. Add the ground beef and diced green bell peppers. Cook, breaking up the meat with a wooden spoon, until the beef is fully browned and the peppers are tender, about 8 to 10 minutes. Drain any excess fat from the skillet.
   Look for The beef is browned with no pink remaining and the peppers are softened.
   Tip Drain the fat thoroughly to prevent the casserole from becoming greasy.
2. 2Transfer to Baking Dish
   Transfer the browned beef and green pepper mixture to a grey 9x13-inch baking dish, spreading it into an even layer.
   Look for The meat and pepper mixture is spread flat across the bottom of the dish.
   Tip Use a spatula to press the mixture gently into the corners of the dish.

At the end of this phase, the ground beef should be fully browned with no pink remaining, and the green bell peppers should be tender-crisp with slightly caramelized edges.

The mixture will smell highly savory and aromatic from the beef. Ensure all excess fat is drained from the skillet before transferring the mixture to the baking dish to prevent the final casserole from becoming oily.

Assembling the Casserole Layers

3. 3Pour the Whisked Eggs
   Pour the whisked eggs evenly over the beef and green pepper mixture in the baking dish, allowing the liquid egg to settle into the crevices of the meat layer.
   Look for The eggs are distributed evenly across the surface of the beef.
   Tip Tilt the baking dish slightly if needed to help the eggs distribute evenly.

At this stage, the beef and peppers are spread in an even layer at the bottom of the baking dish, with the whisked eggs poured evenly over them. The eggs should settle into the gaps, partially submerging the meat. The top is covered with a generous, uniform blanket of shredded cheese, ready to be placed into the preheated oven.

Baking to Golden Perfection

4. 4Top with Cheese and Bake
   Preheat the oven to 375°F (190°C). Sprinkle the shredded provolone cheese evenly over the top of the egg and beef mixture. To cook the eggs and ground beef completely through, bake in the preheated oven until the center reaches a safe internal temperature of 160°F (71°C), and the cheese is melted, bubbling, and golden-brown, about 20 to 25 minutes.
   Look for The cheese is bubbling, blistered, and golden-brown with a firm center.
   Safe temperature 160°F (71°C) internal temperature (ground meat)
   Tip Let the casserole rest for 5 minutes before slicing to ensure clean portions.

At the end of the baking cycle, the casserole will feature a bubbling, deeply golden-brown cheese crust with blistered spots. The eggs will be fully set and firm to the touch, with no liquid remaining. A savory, cheesy aroma will fill the kitchen, indicating that the dish is ready to be removed from the oven and rested before serving.

Common mistakes

One common mistake is failing to drain the excess fat from the ground beef after browning. Leaving too much grease in the pan will cause the egg binder to separate, resulting in a soggy, oily casserole.

Another error is overcooking the eggs, which can make the texture rubbery and dry; monitor the oven closely during the last few minutes of baking. Lastly, cutting into the casserole immediately after removing it from the oven will cause it to fall apart. Allowing it to rest for a few minutes helps the structure set for clean slices.

How to tell it’s done

To determine absolute doneness, insert an instant-read food thermometer into the center of the casserole. The ground beef and the eggs must reach a safe internal temperature of 160°F (71°C) to ensure they are fully cooked through.

Visually, the cheese on top should be completely melted, bubbling vigorously around the edges, and showing beautiful golden-brown spots. The center of the casserole should feel firm when gently pressed with a spatula, indicating that the egg mixture has fully coagulated and set.

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