I have tried a few Alfredo sauce recipes, and this is our favorite. I like that it doesn't call for flour. I found it at the "Six Sisters" website.
1/2 cup butter
2 cloves garlic minced
Melt butter on low heat and cook garlic 1 minute . Then add:
2 cups heavy cream (or evaporated milk)
1/8 tsp. pepper
pinch of salt
1/2 cup grated parmesan
Simmer (don't let boil) for 8 minutes or until think stirring occasionally.
Also, when cooking pasta, remember to boil it with salt!