Bring a large pot of salted water to a boil and cook tortellini until al dente. Drain and set aside.
Heat olive oil in a skillet. Season steak and sear for 3–5 minutes until browned. Remove and set aside.
In the same skillet, melt butter and sauté garlic until fragrant.
Add heavy cream and milk, simmer until slightly thickened.
Whisk in parmesan cheese until smooth and creamy.
Return steak and tortellini to the skillet and toss to coat in the sauce.
Cook for 2 minutes, then garnish and serve.
This Garlic Steak Tortellini comes together quickly while delivering deep, comforting flavor.