Add cottage cheese and evaporated milk to the jar of a Vitamix blender (or other high-powered blender); blend on high until smooth, about 30 seconds.
Pour cottage cheese mixture into a sauce pan over medium high heat. Stir in Parmesan cheese. garlic, and white pepper. Cook, stirring often, until sauce has thickened, 15 to 20 minutes; stir in parsley.
Notes
Serve on pasta of your choice, or use with other recipes that incorporate Alfredo sauce.