This Philly Cheesesteak Casserole is the perfect quick and easy weeknight dinner idea. Filled with all the flavors of Philly cheesesteaks, but in casserole form.
Preheat the oven to 350 degrees. Prepare a 9x13 casserole dish with nonstick cooking spray.
In a large skillet over medium-high heat, add the ground beef and cook, crumbling as it browns. When the beef is almost cooked through, add the onion and bell peppers. Continue cooking for 5 to 7 minutes or until the onion is tender. Season the beef and vegetables with salt and black pepper. Drain the meat and vegetables well and then return it to the skillet.
Stir the cream cheese into the meat and vegetables until evenly combined. Transfer to the prepared casserole dish and smooth into an even layer.
Place the sliced cheese over the top.
Bake the casserole for 15 minutes or until the cheese is melted.