Place the cottage cheese in a high-speed blender or food processor and process until completely smooth with no remaining curds.
Heat a saucepan over low heat and add the minced garlic, cooking for 1 minute until fragrant.
Add the blended cottage cheese and milk to the saucepan, stirring constantly to combine.
Whisk in the Parmesan cheese until melted and the sauce is smooth.
Season with salt, black pepper, and nutmeg.
Heat gently for 2-3 minutes until warm, being careful not to boil to prevent curdling.
Serve immediately over pasta.