Boil the pasta in salted water according to the instructions. Drain the water.
In a preheated pan, melt the butter and fry the shallots until transparent. Then add chopped garlic.
Pour in half-and-half, then cream cheese and parmesan. Cook until the cream cheese has melted.
Add roasted red peppers to warm them up.
Transfer the sauce to a blender and beat until smooth. Salt and pepper to taste.
Mix the sauce with the paste. Sprinkle with basil and parmesan.