Boil: Cook pasta in salted water on Level 10 (High). Reserve 1/2 cup pasta water, then drain.
Combine: Return empty pot to Level 3 (Low). Add olive oil, tuna, beans, and spices. Stir gently to warm through (2 mins).
Toss: Add the cooked pasta back to the pot. Squeeze in lemon juice. Add a splash of reserved pasta water to create a light glossy sauce.
Serve: Top with Parmesan cheese. It feels fancy, but it's pure pantry magic!