A recipe for brown butter sauce from Giada de Laurentiis is available from the Food Network website. A brown butter sauce is a classic to go with squash ravioli.
The ingredients for the brown butter sauce are 1 1/2 sticks of butter, 2 tablespoons of sage, 1/2 cup of chopped toasted walnuts and 1/2 cup of dried cranberries or cherries, with seasoning provided by 1/4 teaspoon of kosher salt, 1/4 teaspoon of pepper, and 1/3 cup of Parmesan cheese. To make the sauce, melt the butter. Add the sage, walnuts, and cranberries or cherries to the pan. Let the mixture cook for about three minutes, then add the salt and pepper, and stir the mixture. Once the ravioli is done, top it with the sauce and the Parmesan cheese.
A variation on the recipe for brown butter sauce include garlic and forgoes the dried cranberries. To make a creamy version of brown butter sauce, use 2/3 cup of whipping cream and 3/4 cup of white wine, and cook the sauce for five minutes instead of three. A brown butter sauce is a classic when used on plain pasta, often with Parmesan or other grated cheese, and also works with squash ravioli.