Start by bringing a large pot of salted water to a boil. Add the cheese tortellini and cook according to the package instructions, usually about 3-5 minutes, or until they float to the top. Drain and set aside.
In a large skillet, melt the butter over medium heat. Once melted, add the minced garlic and sauté for about 1 minute until fragrant, being careful not to burn it.
Sprinkle in the flour and whisk continuously for about 1-2 minutes. This will help create a roux that thickens your sauce.
Slowly pour in the chicken broth and milk, whisking constantly to prevent lumps. Cook for about 5 minutes, or until the sauce begins to thicken.
Stir in the grated parmesan cheese until it melts into the sauce, creating a creamy, cheesy mixture. Season with salt and pepper to taste.
Add the cooked tortellini to the skillet, gently folding them into the sauce until they are well coated in the cheesy goodness.
Remove from heat and sprinkle with chopped parsley for a fresh finish. Serve hot and enjoy your delicious Cheesy Tortellini Pasta!