Cook the tortellini according to package instructions until al dente. Drain and set aside.

In a skillet, heat olive oil over medium-high heat and add the sliced steak. Cook until browned, about 5-7 minutes.

In a large pot, combine heavy cream, cheddar cheese, mozzarella cheese, garlic powder, onion powder, salt, and pepper. Heat over medium heat, stirring until the cheese is melted and the sauce is smooth.

In a mixing bowl, combine cooked tortellini, cooked steak, and cheese sauce. Mix well.

Transfer the mixture to a greased casserole dish and sprinkle bread crumbs on top.

Preheat the oven to 350°F (175°C). Bake the casserole for 20-25 minutes until bubbly and golden brown on top.

Remove from the oven and let it cool for a few minutes before serving. Garnish with chopped parsley.