Cook 16 ounces fettuccine pasta according to package directions until al dente. Drain and set aside.
In a medium saucepan add ½ cup butter, 2 cups heavy whipping cream, and 4 ounces cream cheese. Cook over medium heat and whisk until melted.
Add the ½ teaspoon minced garlic, 1 teaspoon garlic powder, 1 teaspoon Italian seasoning, ¼ teaspoon salt, and ¼ teaspoon pepper. Continue to whisk until smooth. Add the 1 cup grated Asiago cheese.
Bring to a simmer and continue to cook for about 3-5 minutes or until it starts to thicken. Toss it with the cooked pasta and enjoy!