Lemon Basil Zucchini Pasta Alfredo

Bahan-bahan (6 porsi)

• 1 pound linguine or fettuccini
• 6 tablespoons salted butter
• 1 lemon, sliced, seeds removed
• 1/2 cup fresh basil, chopped
• 1 yellow onion, chopped
• 2 cloves garlic, chopped
• 2 zucchini or yellow summer squash, very thinly sliced
• 2 tablespoons fresh thyme leaves
• salt and black pepper
• chili flakes
• 1 cup heavy cream
• 1 1/2 cups grated parmesan cheese