Cook the pasta: Boil salted water, cook pasta until al dente, and reserve ½ cup pasta water before draining.
Sauté aromatics: In a skillet, warm olive oil and cook shallots and garlic until translucent and fragrant, being careful not to burn.
Blanch the greens: Briefly cook spinach, kale, and basil in boiling water for 30–60 seconds, then drain and rinse under cold water.
Blend the sauce: In a blender, combine the blanched greens, sautéed aromatics, mascarpone, parmesan, cashews, lemon juice, and pasta water. Blend until creamy and smooth.
Toss everything together: Return pasta to the pot, pour in sauce, and toss until evenly coated. Adjust salt, pepper, and pasta water as needed.
Garnish and serve: Top with red chili flakes, fresh mozzarella balls, and a drizzle of olive oil. Serve immediately.
