In a large pan over medium heat, add the wine, shallot, rosemary sprig and peppercorns. Reduce until there is about 1 Tablespoon of liquid remaining in the pan. This should take about 3-5 minutes.
⅔ cup dry white wine, 1 small shallot, 10 whole black peppercorns, 1 rosemary sprig
Add the vegetable stock and reduce by half. Once reduced, strain out the solids from the sauce and discard them. Return the liquid to the pan and reduce until there are about 2-3 Tablespoons of liquid remaining. This step should take about 15 minutes.
2 cups vegetable stock
Add the cream to the pan, stir well and continue to cook over medium-low heat. Reduce the cream for a few minutes stirring occasionally while the pasta cooks.
2 cups heavy cream
In a large pot of boiling, salted water (about 2-3 tablespoon of salt), add the ravioli and cook until they the pasta floats. Depending on the size and if they are fresh homemade ravioli, or frozen pre-made ravioli, this can take between 2 and 5 minutes for al dente pasta, but follow the cooking instructions on the package if using store-bought ravioli.
1 pound butternut squash ravioli
In a small pan, add 1 tablespoon butter over medium-high heat until the butter melts. Add the breadcrumbs and, stirring often, cook until lightly browned. Remove to a paper towel lined plate and set aside to cool and drain off excess butter.
1 Tablespoon unsalted butter, ¼ cup panko breadcrumbs
Add the finely chopped rosemary, Parmesan, and pepper to the cream sauce. When it is the desired thickness, taste and add kosher salt if needed. Transfer the cooked ravioli from the pot of boiling water and put them in the pan with the sauce. Gently coat the ravioli then transfer to serving plates or bowls. Top with the toasted panko and serve!
1 teaspoon fresh rosemary, ¼ cup Parmesan cheese, ½ teaspoon black pepper, Kosher salt