Prep the oven and pasta: First, preheat your oven to 375°F (190°C). Boil your fusilli pasta in salted water for only 4 minutes, drain it, and pour it right into your casserole dish.
Make the pesto: While the pasta boils, blend the fresh basil, chopped garlic clove, olive oil, and water in a food processor until it’s finely chopped.
Cook the chicken: Next, chop the chicken breast into chunks and cook them in olive oil for 3-4 minutes. They won't be fully cooked, and that's perfect!
Create the cream sauce: In a pot, melt butter, whisk in flour, then slowly add milk and vegetable stock, whisking until the sauce is thick and bubbly.
Combine everything: Take the sauce off the heat and stir in the quark and ⅔ of the parmesan. Add the chicken, pesto, and sauce to the pasta and stir it all together.
Bake and serve: Finally, scatter the pine nuts and the last bit of Parmesan on top. Bake for 20 minutes until golden and bubbly, then serve it up hot. ENJOY!!!