01 -
Bring a large pot of salted water to a boil. Add the jumbo pasta shells and cook until al dente, about 8-10 minutes. Drain and set aside to cool.
02 -
In a large skillet, heat the olive oil over medium heat. Add the onions, green bell pepper, and mushrooms. Sauté for 4-5 minutes until the vegetables are tender.
03 -
Add the ground beef or sliced steak and cook until browned. Stir in the minced garlic, salt, pepper, and Worcestershire sauce. Cook for another 2 minutes. Remove from heat and let cool slightly.
04 -
Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish.
05 -
Spoon 1-2 tablespoons of the beef mixture into each cooked pasta shell. Place the stuffed shells in the prepared baking dish.
06 -
Sprinkle half of the shredded cheese over the stuffed shells. Pour the Alfredo sauce evenly over the shells, then top with the remaining cheese and Parmesan.
07 -
Sprinkle with Italian seasoning for extra flavor.
08 -
Cover the baking dish with aluminum foil and bake in the preheated oven for 20 minutes.
09 -
Remove the foil and bake for an additional 10 minutes, or until the cheese is melted and bubbly.
10 -
Let the stuffed shells cool for 5 minutes before serving.