You'll have to boil the pasta first. Then strain and toss them with some olive oil. Keep aside.

Put butter on a pan, then cook the garlic untill it's brownish. Add some flour to it and pour some milk, pepper and salt in it and keep stirring so that any lump doesn't form. Pour the rest of the milk and cook it in low flame untill it gets more creamy.

Mix the pasta properly with white sauce. Don't overcook it. After a minute or few it's ready to be served.