Sauté Beef and Vegetables: Heat butter in a skillet over medium heat. Add beef strips and cook until browned, about 3-4 minutes. Toss in sliced bell peppers and onions, sautéing until soft and caramelized, around 5 minutes.

Cook Tortellini: Bring a pot of salted water to a boil. Add tortellini and cook according to package instructions, usually around 3-5 minutes, until tender. Drain and set aside.

Prepare Provolone Sauce: In the same skillet, add minced garlic and Italian seasoning; cook for about 1 minute until fragrant. Stir in cream and bring to a gentle simmer. Gradually add provolone cheese, whisking until the sauce is smooth and creamy.

Combine: Gently fold the cooked tortellini and sautéed beef mixture into the sauce, tossing until everything is thoroughly coated and heated through, around 2 minutes.

Serve: Plate the dish in family-style or individual bowls, garnishing with freshly grated Parmesan cheese and a sprinkle of parsley for a touch of freshness.