Step 1: boil the pasta as desired.
Step 2: as it is nearly done empty the tin of beans into a bowl and microwave according to guidelines but take out 30 seconds before it is finished.
Step 3: add as much grated cheese as preferred and cook for the remaining 30 seconds.
Step 4: when all is cooked, add drain the pasta and add to the beans.
Step 5: mix all together and serve.