Simmmer.

Step 1 of 6

Tuna casserole

Step 1 of 6

Undercook the pasta

Boil the pasta in well-salted water for two minutes less than the packet says, so it still has a real bite, then drain it.

08:00

It finishes cooking in the sauce in the oven. Cooked properly now, it will be soft and swollen by the time it reaches the table.