01 -
Preheat oven to 375°F and lightly grease a 9x13-inch baking dish.
02 -
Boil pasta in a large pot of salted water according to package instructions until just al dente. Drain and set aside.
03 -
Heat olive oil in a large skillet over medium-high heat. Sauté sliced onions and bell peppers until softened and caramelized, about 6 to 8 minutes. Add minced garlic and cook for 1 minute.
04 -
Add ground beef to the skillet; cook, breaking it up, until browned and cooked through. Drain excess fat if necessary. Season with salt, black pepper, oregano, and red pepper flakes if desired.
05 -
Reduce heat to low. Stir in cream cheese until melted, then add milk and half of the shredded provolone and mozzarella. Mix until sauce is smooth and creamy.
06 -
Add the drained pasta to the skillet and toss gently to coat evenly with the beef and cheese sauce.
07 -
Transfer the mixture into the prepared baking dish. Sprinkle the remaining provolone and mozzarella cheeses evenly across the surface.
08 -
Bake uncovered for 18 to 22 minutes, or until cheese is melted and bubbling. For a golden finish, broil for 1 to 2 minutes if desired.
09 -
Allow the bake to rest for 5 minutes before serving hot.