Alfredo basil sauce is an easy recipe that is creamy, cheesy, and so simple to learn how to make. With the help of some garlic, Parmesan, heavy cream and fresh basil, you'll have a restaurant quality sauce that tastes amazing on fettuccine or tortellini.
Boil the tortellini in a large pot of salted water according to instructions on the package. Reserve some pasta water, then drain the pasta.
Preheat the oven to 450 F and line a small baking tray with foil. Rinse the grape tomatoes and spread them out on the tray. Bake for 9 minutes, or until very soft.
Making the Basil Alfredo Sauce
In a large skillet over medium high heat, melt the butter then saute the onion for 3 minutes. Add the garlic and saute for 1 minute.
Reduce the heat to medium, then sprinkle on the flour and whisk it in for a couple of minutes to let it cook off the raw taste.
Whisk in some white wine, and cook off the alcohol for a minute, stirring constantly. Stir in the heavy cream until smooth, then add the chicken stock and freshly grated Parmesan cheese.
Simmer for 5 minutes, stirring occasionally, then mix in the chopped basil. If it needs thickening, pour in 1 to 2 tablespoons of pasta water. Remember, the sauce will thicken as it cools.
Sprinkle with some black pepper and garnish with mini basil leaves.
Gently stir the cooked tortellini into the sauce until it's evenly coated in the alfredo. Add the roasted tomatoes and serve.
Notes
Don't use pre-grated Parmesan, use freshly grated.
Use the stovetop on a low temperature to reheat. If microwaved, the dish will become oily and will separate.