firstly, in a large vessel boil water along with salt, now add penne pasta and stir well and boil for 10 minutes, drain off the cooked pasta and pour cold water to stop the cooking process.
now in a large kadai heat butter and saute garlic, also saute onion until they shrink slightly or 2-3 minutes.
further add capsicum and sauté for 2 minutes than add broccoli and voi sweet corn, stir fry for 2 minutes without over cooking vegetables.
now add pepper, mixed herbs, chilli flakes and salt. give a good mix.additionally, add cup water leftover pasta water.
also add eggless mayonnaise. (add more if you are looking for more creamy pasta.)
now stir and combine keeping the flame on low. do not get sauce to boil, furthermore add boiled pasta and mix well coating sauce uniformly.
finally, enjoy mayonnaise pasta topped with cheese and chilli flakes.