Preheat oven to 350°F (175°C) and grease a 9x13 inch baking dish.
In a large skillet over medium-high heat, brown the ground beef until cooked through, then drain the excess fat.
Add the diced bell peppers and onions to the skillet with the beef and sauté for 5 to 7 minutes until the vegetables are tender.
Stir in the minced garlic, salt, black pepper, and Worcestershire sauce; cook for an additional minute.
Reduce heat to low and stir in the softened cream cheese until fully incorporated and creamy.
Transfer the beef and vegetable mixture into the prepared baking dish and spread it into an even layer.
Place the provolone cheese slices across the top to completely cover the meat mixture.
Bake for 15 to 20 minutes until the cheese is melted, bubbly, and slightly golden on the edges.
Allow to rest for 5 minutes before serving.